For me it's less about "find a hobby/enjoy life" or more that we're likely in this field because we want to feel necessary and useful.
I WFH with amazing TC and WLB. I do my hobbies all day and then work just a few hours. But I feel like an absolute piece of shit just coasting at work. Doesn't matter how well my hobbies are going, I'll always have the quiet stress of not contributing what I'm capable of doing. The times I feel good about myself are when I actually ship something cool with my team.
People working 4 hours a week still have to pretend to be productive for the other 36 hours though. They still have to sit through meetings, and justify their time, and answer Slack messages, and have reviews. They're not free to work on their own projects - they're just 'not working'. That sounds far worse than spending time working on something you actually care about even if it's not your own idea.
The comment that kicked this off was “ If somebody wants to pay me $300k to work 4 hours a week, I'll happily take the deal. As long as that's the actual acknowledged situation and not "most of your job is pretending to work and making people think you're important"”