I'm a big believer in straight-up cheating when a single-player game ceases to be fun but you still want to see where it goes. Good on you for throwing yourself at the wall, but I'm not certain you're saying it was very much fun, or worth it.
If it was, hey congrats! But if it wasn't, there's no shame in just turning on god mode when a game's difficulty exceeds what you're interested in grinding. It's a single-player game and you don't need to let other people define how you finish it.
(I personally toggled godmode maybe halfway into the path of pain and again when going for the "true" ending)
he seems mostly well-intentioned, and probably won't be a terribly bad influence on your kids, moreso than any other algorithm slurry youtube videos, so on that scale he's probably fine for your kids to watch
if we were trying to assess his overall morality it would get into "is clickbait millionaire philanthropy an ethical way to spend your wealth" territory, which is a huge can of worms that's difficult to find a solid answer for