Honestly I do use that time to play video games because I don't see the point of working my ass off. Suppose I grind my ass off and manage to get a €200k on-site job with on-call. Is that actually a win? I don't think so.
I do the same, but mostly because when I have bothered to work my ass pff to try and get a cool job, I never get hired anyway because they only hire established domain experts and juniors via a university pipeline.