If the alternative in this artificial dichotomy would be spending more than 40 hours per week to get my salary, I'll take the "WFH and do nothing" option that y

If the alternative in this artificial dichotomy would be spending more than 40 hours per week to get my salary, I'll take the "WFH and do nothing" option that you're positing. Why on earth would I do extra work for free? However, that's not how this actually works. WFH and in-office and hybrid can all be do-nothing jobs or getting-stuff-done jobs. Depends on the coworkers, on management ability to set direction, and on the industry and product. They can all also be a waste of time or worth the time, again depending on what the company does.