I'll take your points one at a time:
...Morty jumps into condomless Anal sex from basically day 1.
Optional extra scenes are optional. You don't have to jump into any sex scenes that aren't in the original game if you don't choose to. And scenes occur in a very similar order to when you can encounter them in the unity game.
Not to mention the much better models and animations add lot more life into the game compared to frame by frame cut outs...
The only missing item from standing models are eyeblinks and very slight breathing movement. This isn't impossible to do in renpy, but it's a trade off in time and complexity for something that I personally feel doesn't adds much. Also, any frame-by-frame animations are extra animations, all the original animations still exist.
Also, I kind of find the hyperfetishised mommy kink in renpy version a serious bonerkiller. I start cringing when I read some of the text changed in the game. I don't know how or why, but Ferdafs's subtle approach to incest is way hotter. I blame the fact that Nightmirror is way too eager to please every person that plays that version...
A point of fact that I can't please everyone, and I'm not trying to. But also no reason not to listen to an consider feedback from players willing to give it. The "herfeishised mommy kink" is there because 1), incest game, and b) I personally enjoy it, cringe and all.
Edit: Pro tip tho, if it really bugs you, just do a simple search and replace for "mommy" in the game script files and either make it blank or replace it with "Beth" and problem solved!
...and goes as far as taking requests from them. That will be the downfall of that version...
Uh... wut? You're saying it's better to ignore what the people playing my game are asking for? The request list are just suggestions for, again, extra content. Not all of which will or can be added. Not sure how some extra options will result in the downfall but... okay...