I didn't get $100k+ from my parents. in fact I currently pay my mom's rent for her many months, because I made it while she's still scraping by. but if all you're seeing in his thread is the dollar amount and him feeling some kind of negative way, you're missing a LOT.
many of your reactions paint a caricature of him, some kind of "whatEVERRR mom and dad, I hate you, you suck, I'm not grateful for this money, I can skateboard in this house if I want to!" bullshit. like you stopped reading after the word "resent" and didn't try to understand it.