I'll go with a big part of it twisting what happened in his head due to a victim complex (so many literal spergs have these), and the rest of it being made up for pity points. Almost everything can probably be traced to some incident he caused, so his parents punished him "for no reason" by saying no games for a week or some shit. In his mind this becomes abuse because he thinks he did nothing wrong, but he also knows saying "they always took away my game and TV privileges" isn't going to be what most consider to be abuse so he replaces that with getting beat all the time. And his stepdad would read to him to try to make Enter realize he was genuinely being bad, Enter had no self awareness so it never sunk in, and the cycle would happen over and over again.However I have a strong feeling that Enter's "abuse" is on the same level as Boogie 2988s Most likely exagerated and most of it made up. I refuse to believe a school would do nothing if someone got peppered sprayed by bullies and his getting hit with a belt for bad grades sounds suspiciously like it came from a Stephen King novel.
I mean, I could be wrong, but there's both cows on this site and ones I've encountered personally who cry "abuse!" or "bullies!" only for it to be shit like "I was expected to actually do work".