Uh, they clearly did not follow any of the original characters or themes by flushing them all down the toilet at the end. How could they "follow and expand" on something they burned to the ground? I have a feeling most of the people who like the changes probably didn't play the original when it came out. For the life of me I cannot figure out why taking a game that is literally considered part of the pantheon of gaming and completely undoing it is "genius", let alone even halfway considered. It's seriously one of the dumbest moves I think any company could take.
This is just my opinion but every argument I've seen supporting the changes sounds like cognitive dissonance. All of it is "Oh, it's great because now they can do what they want!" or "They couldn't recreate the amount of material in FF7 anyway, this gives them freedom!." Or how about "No remake could live up to the hopes of the fans of the original, so this is good!" Notice, that none of this is an actual argument of quality, but instead rationalization of decisions made after their discovery. Nobody asked for this. I can explain why Aerith's death in the original has meaning to the story, and to the original creators. How the game deals with themes of loss and sacrifice. Think of the very last shot before the credits in the original. All of that is just flushed. Practically all of the changes are silly, juvenile, and remove any sense of gravity from the story.
I guess FF7 remake likely won't kill Aerith this time around, but it did kill Final Fantasy 7.