The irony is that Noah’s now vastly more complicated backstory feels as though it were developed to answer complaints about the character. Without knowing how long ago showrunner Sarah Treem planned these plot elements this is all sheer speculation, but for viewers who wondered why Noah would destroy his seemingly happy family for a shot at spontaneity, or why he’d sacrifice himself and go to jail to protect Helen and Alison when it was quite possible all of them could have gotten away with it, or why his relationships with women seem both sincerely intense and self-sabotaging, or why he swung from the supremely self-possessed Helen to the deeply damaged Alison — well, Noah convincing himself he’s somehow culpable for killing his mother after being the only person left to take care of her and then failing to kill himself in turn threads the needle quite nicely.
Is it all a bit radioactive-spider origin story for a behavior pattern that’s not really that difficult to contextualize? Perhaps. But then again anyone who’s been in therapy for long enough can attest to those “holy shit, it was because of what happened at my cousin’s confirmation when I was in fourth grade!!!!” moments. Giving Noah these dark secrets doesn’t take away his agency or explain away his good and bad qualities, nor do they singlehandedly make those things possible. They’re simply the building blocks out of which he constructed the rest of his life.