Hmm.. I don't know where you worked, but your experience seems to have sucked.

Nowadays I feel that it's not so much about how late you stay in the office. Most professional jobs now are hybrid. Part time in the office, part time work from home. Managers don't see how much time you spend on work at home. So this mindset has changed quite a bit since the pandemic.

Regarding learning new things, you're asking them to sacrifice a whole hour. Even in a 40h work week that's a lot of precious time and it's difficult to get everyone together at the same time to do a learning session. Maybe let them learn in their own time by providing a video or documentation on the topic instead.

Finally, you wouldn't believe how much time I spend on chores during my work hours. I still get my work done on time. Which proves a 32h 4 day work week is totally doable for professionals working 9-5 office jobs. Of course for other fields it might have a greater impact, like construction. But they can plan around that and allow more time to finish their projects.