How is it compared to just browsing booru-like sites, or video sites?

A grading system that does nothing doesn't bother me. A grading system that unlocks highly desirable, but non-essential stuff will probably get me on my nerves, or get me to cheat. Tenchu on the PS1 had 1 unlockable item for each mission you got a GrandMaster rank

Same applied to the original Medal of Honor, though I never understood why some of those grades were given, I think they had more to do with where most of your shots landed?

People have this tendency to associate wealth with knowledge, or business savvy. For many companies, it's just a matter of "creative accounting" coupled with a psychopath CEO and lucking out. Epic lucked out with Fortnite Battle Royale, don't forget their original "save world" was a total flop as a paid product

Nerdslayer did a great job giving most of the history of TTG, from beginning to shutdown https://inv.tux.pizza/watch?v=8JUlDr7EdqQ

Also related, Bill Willingham, who wrote The Wolf Among Us, released his IPs in the public domain as a middle finger to DC, who's not paying him royalties, nor did they consult him on the making of the game. - https://exputer.com/news/games/the-wolf-among-us-creator-public/

Ah, the benefits of nearly infinite money