Aside from the fact that most of what you've said are personal opinions, ill answer anyway.
The proshipping stance was misinterpreted from the start. From the first post salt said that she doesnt find proshipping AS condemn-able if its done for coping reasons. For many the situation cleared, after truly reading the contents of her posts. Naturally, people like you did however not truly read, opting to use the chance to feel superior, creating echo chambers, thus cementing this line of thought.
Your opinion on TCOAAL is completely subjective. Whilst I do not enjoy the game myself, I will not claim moral superiority. It is comparable to slasher movies, where there is nothing but gore. Still the slasher movies gain a fandom, yet I know from experience the people who watch slashers could infact not do any of the things done on screen. And even if we both agree on TCOAAL to some extend, it once again doesn't mean Salt supports actual incest, which is obvious and the actual talking point.
Salt has a clear warning in her description that she draws gore. When salt does draw gore, she censors it to the best of her abilities. Salt has done this from day one. It is not salts responsibility to babysit her audience, salt may post what she wishes. Minors will and have always found their ways to places they shouldnt be on day one of the internet. Salt is very tame in comparison, especially considering the warnings.
Neither is Salt a kid, she is a teen. You calling her a kid and her audience, also mostly comprised of teens, kids, most likely shows a lack of growth on your part, still seeing yourself as a young kid.
The fact you included a post saying "Your cat was delicios" and tried playing it off as a genuine talking point furthers what i just stated about lack of growth. If you truly saw that ludicrous joke making fun of a ludicrous stereotype in a ludicrous way and think its this big of a deal, get back on twitter.
One could make the argument that you shouldnt teach a 13-14 year old such things. One could also make the argument Saltv2 helped out someone asking for advice. One could also argue once again, it isnt saltv2's responsibility to babysit her audience. And finally, one could realise that drawing gore doesn't make you mentally unstable, especially not if you're already asking for advice. Salt has also mentioned that drawing gore helped her cope with depression, it most likely does the same for others. Good on you for disliking how others cope with their situation.
Lastly... Yeah? The cat fucking her arm was weird, which is why she made a comment about how weird her cat was being? Animals have a tendency to do shi like that.
Facit: You think you're the morally superior one when you're just soft. You have a opinion, you claim it as fact, and anything that goes against is straight evil. That is all you have done, aside from parroting false accusations.
And, shortened version:
Salt never said proshipping good. Salt acknowledged bad coping.
Opinions on TCOAAL are subjective, doesn't mean salt supports real incest.
Obvious Jokes are subjective. Do not get offended on behalf of others.
Statement that gore should not be tolerated at such age builds on dislike of gore and the claim it has mental effects.
Cat does funny thing and salt comments on it.