Okay.
1. Yes, while it is, indeed, somewhat a ripoff amalgamation, it's also so much more than that.
2. I don't think this game is "just 90's" (like, some of the things featured in the game are way too new) and I've played a Sonic3D.exe game and let me tell you, it is nothing like that. It's even slower than AEWVS, despite being more simple AND forcefully lowering the resolution. Have you played many horror games other than Sonic.exe? You know, in this game, you're actually the shining light of hope, while in Sonic.exe, you're the one being attacked and played with for no more reason other than a devilish god's fun. And in the meta sense, too.
3. Yeah, and Sonic has more fans too. Looks like Baldi ripped off Sonic too, but that was actually quite original.
4. What do you expect from such a game of any kind? I'm also trying hard to neutralise that. Version 0.0.1 (the first alpha) was so new and different, but also what you'd expect of a generic "fangame" of it's kind that they played it once and ditched it for more trendy and important things to play. As it's been abandoned, MrDrNose kept going at it and piling stuff onto it to push it closer to completion and make it the best game it can be. As for the plans to bring the game all the way back to relevance again, I have ideas.
5. I know, the gameplay premise, notebooks, math teacher, grey rule enforcers, sweeping janitors, vending machines, quarters, soda, chocolate and stamina are pretty much all the same, which is why even newcomers judge it to be so similar (that's pretty much what they show you at the start). I'm not even going to count the amount of things that aren't, especially the part where Baldi "dies" bloodily.
6. This is ADVANCED education. I've played this game for so long that every time I play it, I blitz the arithmetic and see the part where you pick up the calculator and press the buttons as detrimental (apart from in the overly difficult questions). I can beat the Lil Puss and Boi modes without one.