I don't blame you for not reading the thread (it's super long), but it's painfully obvious you haven't read it. Either that, or you ignored just about every point that was made here.
With the slight exception of shokio, nobody is upset with nerfs or having a harder time winning. In fact, I went to a tournament the day after 3.5 dropped and took first with her. That was the first and only time I've ever won a tournament thus far. I dropped the character because she's boring and generic and doesn't have anything cool about her anymore. Many have stated that they'd rather play a 3.02esque ZSS that is low tier than a 3.5 ZSS that is high tier. This isn't about viability, and suggesting we are complaining because we were relying on gimmicks and can no longer win is offensive.
The idea of "fundamentals," is condescending and absurd. You could just as easily call shine, knee, missiles, or anything a "gimmick" and rationalize removing them because it would reward "good fundamentals." ZSS just had a slightly different set of fundamentals than traditional characters. You couldn't just spam blaster and succeed, you needed to be good to make it work. In fact, spamming it was a very BAD idea. I WISH ZSS got the mewtwo treatment, because he still gets to act out of teleport. He is essentially a toned down version of the same character. they didn't just rip out and replace stuff willy nilly. ZSS on the other hand, is a different character. She's not bad. In fact, she's probably in the same general tier area as last patch, if not higher. However, balance is not the end all be all. A game has to be FUN. You want to include as much fun as possible while maintaining balance. We are making the point that ZSS could easily remain balanced without removing core mechanics. No one was complaining about her, why not just trim her down a bit like all the other upper mid characters?
Also, for your second argument, there was absolutely no fallacy. We aren't saying "let's make this illegal thing legal because that other thing that should be illegal is legal" in the SLIGHTEST. There are two things being said, one of them is a question.
1. PMDT stated they removed dash cancel paralyzer because it was polarizing and jank, but why was she targeted when there were so many other jank and polarizing things left in place? Why only her?
2. Jank isn't a BAD thing. Look almost every character that is considered really fun to play. They are all extremely jank, namely falcon. If you removed all jank from this game, it would be an extremely dull by-the-numbers fighter. While it's important to keep things from getting TOO jank, ZSS dash cancel blaster is WELL below that threshhold.
The main reason people were talking about melee characters so much wasn't to make a point for ZSS, but to express their frustration with the PMDTs clear melee character bias (towards fox in particular).
We are MORE than willing to compromise. We want to play 3.02 ZSS, but we aren't being unreasonable about it. We want dash cancel paralyzer back, but you know what? Being trancendent was kinda dumb and we probably don't need to dash cancel it the frame it comes out. We also don't need to be able to jump out of divekick and etc. However, we want tether grab back because a standard grab does NOT fit her character (the only stated reason for the change). Making Falco fly, pokemon weak to types of attacks, and fire emblem character's swords break would all "better fit their character." If you look at it from a certain angle. However, it is a very poor design decision. Giving her standard grab forced them to break her identity.
Bottom line is, ZSS players who played her in 3.02 found her to be a very fun and unique character that rewarded good tech skill, good reads, good fundamentals. and good overall game knowledge, just like just about every other character. However, she did so in a unique manner, just like just about every character SHOULD. Being unique is a GOOD thing. Otherwise we may as well pick the most "fundamental" character and ban all the others. If ZSS blaster really was so broken it had to be removed, then I want to see proof. Show me games where players of equal skill in several matchups where a ZSS player abused blaster to win. THEN convince me that toning it down wouldn't fix that problem. Besides, the only reason blaster cancel was removed was because they gave her a standard grab (PMDT even said so). At the core, THAT is the root of all the bad ZSS changes.