Probably the main one, people mostly complain about context window management rather than token usage

Dunno about that. Having used the $20 claude plan, I ran out of tokens within 30 minutes if running 3-4 agents at the same time. Often times, all 3-4 will run a build command at the end to confirm that the changes are successful. Thus the loss of tokens quickly gets out of hand.

Edit: Just remembered that sometimes, I see claude running the build step in two terminals, side-by-side at nearly the same time :D