I think some people imagine that people like me calling for 32 hour work weeks are part of some slippery slope to everyone working an hour a day.

I trust the research that suggests that humans may only be built for ~30 hours of detail oriented work per week. That's also a nice number where I have time to work on other things, rather than just loafing about. If my boss offered me 30hrs/w plus insurance, I'd spend an extra 5+ hours a week working on my side projects and volunteer work.