Another argument to flesh out the time management aspect of the discussion is that nobody on here has any other marketable skills they could be using their spare time for, thus they trade real cash for Gamestop credit and risk getting banned because of it. If you developed and marketed anything supplemental to your actual job, then you most likely wouldn't be wasting all that time looking for games to flip to Gamestop for a 1.5x trade credit return at best.
Yet another facet to the discussion is how close people live to these Gamestops. Not everyone has two Gamestops within a 30-minute detour of their daily routine. I'd consider anything more than 30 minutes a waste of time and gas, and the small returns being reported in these threads aren't even worth that trip.
Good to see more people acknowledge that there are real ways of making actual money as a side hustle. And then there's Gamestop trade-ins, which are closer to collecting bottles than anything.