I think Cloud found a sense of comfort and peace with Aerith in the movie, perhaps also the comfort and peace he was seeking when he went and set up in her church. I wouldn't say his talk with Aerith, her healing him, pulling him safely through Bahamut's Megaflare/giving him the strength to hit limit and finish that fight off there, helping him in the church via Kadaj with the lifestream fountain, the "Let's go" from Aerith to Cloud after, her amassing white lifestream to Sephiroth's black and being there with everyone for the fight via Sephiroth - Marlene's "Is it her?" - or "Sister!" if you prefer
, melting the other two SHM with Great Gospel, healing Cloud after that fight, etc wasn't important, didn't play a big role in the movie and didn't help Cloud. It might have took a bit of time for his talk with Aerith to sink in, the talk with Vincent, the messages on his phone including Aerith's as well as Marlene and Tifa's words too, for it all to sink in and for Cloud to start picking up the pace but I think Aerith's words/the talk was still important as a part of that, I think at first he was just at a bit of a loss after it, since it was Aerith's forgiveness he wanted more than anything, I think there's a quote somewhere about how Aerith helped with this/or was needed for this or something, and perhaps if the talk with Aerith hadn't happened his performance for fighting might have been affected, he might have still went ahead with it, I think so to protect Tifa and the children but perhaps his guilt about what happened to others he loved might have still been at the back of his mind so he wouldn't have been fighting at his best so those he was fighting might have stood more of a chance at beating him/he might have lost, who knows , but yeah I think it was important for him to hear Aerith's words, even if it took a little time/Cloud thinking about it to sink in, I think they did help him to start to move on/Aerith was part of helping him with that.
I think Cloud was just kind of put out that he'd spent all that time blaming himself, so he had to stop and think about it when Aerith didn't seem mad at him, it was like he couldn't believe that she didn't have a problem with him for what happened, he'd spent so much time thinking that so it took him a bit to wrap his head around her "Isn't it about time you did the forgiving?" so he had to think about that some, but still I think he took it into account and that it was part of the whole process that was going on, that what she said including the "I never blamed you, not once. You came, that's all that matters" was important to him, that it was important for him to know she never blamed him, that he already had her forgiveness because he was already forgiven/never blamed by him in the first place but still I think he needed to feel he was forgiven/not blamed so he could move onto the next stage which was forgiving himself, so yeah I think that threw him for a loop that was what he would have to do since he'd never actually been able to see that before since he'd been so hung up on the forgiveness thing, so when he was presented with it after Aerith's not blaming him he was like wait ... what?
Aerith: Sigh. Dilly dally, shilly shally. Isn't it time you did the
forgiving?
[Scene switches back to the present time with Cloud, Vincent, and
Marlene.]
Cloud: Are sins ever forgiven?
Vincent: I've never tried.
Cloud: You mean ... never tried.
[Cloud looks down, thinking about Vincent's response. He looks up and
tells Marlene they're leaving.]
Cloud: Marlene, let's go.
(credits AC script)
Well Tifa, Marlene, Aerith and Vincent were all involved in this sequence of events
**
I can see where Que is coming from, and I think she's right to an extent/in a sense. Cloud finds comfort and peace while spending time with Aerith, they grew close in a short time, there is statements to support this in the Ultimanias/such. So I don't think people are wrong for picking up on that, there's also the waver between two heroines and maybe things would have been different with Aerith quotes, why because they had a different kind of bond, there's even the they had a different/special bond quote as well, so if people are picking up on the comfort/peace, special bond, different, etc stuff it is substantiated in the Ultimanias some, so it's not like they are just pulling it out of thin air or anything
I don't think it's wrong to say Cloud and Aerith had a good/solid connection at least due to this, the references to it in the Ultimanias/etc. Saying/making out they have a good connection or enjoying that/discussing it/posting arts/videos/w-e/etc about it isn't taking it too far I don't think. Taking it too far would be dismissing Cloud/Tifa out of hand, denying the very existence of Cloud/Tifa, changing things around to suit ulterior motives/own agendas etc ... well peeps know what it would be and Que's not it