I'm not understanding this language argument either. I mean when you have stuff explicitly saying Cloud and Tifa favored each other for years, confess their desire for each other, their moment being something "special", the moment being highlighted in a love article, and their feelings being mentioned 8 different times (even before the 25th anniversary), I'm sorry, that makes Cloud and Tifa canon. It's not even a matter of preference anymore. This whole thing on faint, young, immature, childhood awakening, slight, fleeting, etc is an argument over semantics which do not matter in the long run.
That doesn't mean people can't support Cloud x Aerith. It's a legit ship, there's a reason why they were the popular couple back in the day. I know when I play FFVIII, I kick Rinoa to the curb and go for Quistis (despite Squinoa being "canon"). When I play FFX, it's Lulu all the way. People have the right to enjoy their ship if it makes for a better gameplay experience. But canon is canon, it's something that cannot be argued. If the 20th anniversary made Cloud x Tifa official, then the 25th anniversary is the hammer that reinforces their ship with alloy titanium.