That is some smelly poop right ther
You don't painstakingly develop a system where magic has been turned into a science, only to start throwing hogwash like this around. You don't develop a gameworld wherein the afterlife is a tangible, rational thing and then just give a cubicle-farmer the superpower to bring pens and doilies to life.
Would the doilies go into the Lifestream?
The ambiguity around Cait Sith was one of the more interesting things left unsaid about Final Fantasy VII (as FF7's strengths were mostly what was left unsaid). It very subtly handled the old robot question of the validity of life even if it is programmed (or, in Cait Sith's case, directly controlled). Cait Sith also played into the theme of puppetry and manipulation, and what it means to make a choice. He was ALSO important to bear in mind when thinking about identity, as Reeve prefers to remain as Cait Sith even after he is outed, suggesting that the character has become the man, and vice versa. There is just a truckload of subtext and depth in the character that it gets hard to fault him for being an excitable annoyance.
Now, a wizard did it. The magic cat is all there is.
If Reeve has this power, why didn't he use it all the time for his job? Urban development, hmm. He could bring cranes to life and they could build flawless infrastructure. He could bring dollar bills to life so they could have sex with each other and make new dollar bills. He could bring the roads to life so they could give him weekly status reports on traffic.
He wouldn't be, you know, rounded up by the Science Department and experimented on? Aeris couldn't do shit like that. Nobody can. Cause it's smelly poop POOP POOPY CA CA