You're not Jhon, this is a bad ideia
So I got a bunch of endings, still have to finish the game and see more routes but I feel like I "beat" the game. I don't regret the name replacement. I thought you guys were hinting that the john character was not your character meaning you would have a separate character or something, but no john is essentially the player character. I don't see why you would ever not replace john with your own name.
This is a very "girl written" game. The characters are quite deep. I also just finished Once in a Lifetime
https://f95zone.to/threads/37470/ which was absurdly well rated and its characters were way worse than the ones here. This VN is just very sympathetic to all the characters here in a way that you don't see in male-written games, even the ones with good writing. Everything feels really realistic, even though the situation is absurd and out there, it feels realistic in context. The characters act according to the logic of the world and don't feel like they're just dolls set up to give you something to touch and discard. They're their own thing, which is really excellent and immersive.
But the reason why I call this very "girl written" is because guys don't actually like that, they kinda just want sex dolls who pander to them, so they never try to do this. Coming out of this I feel like I had an "interesting experience" that I would want to tell my friends (if it were real) instead of a powertrip sex dream that I would keep private as from the typical f95 VN.