> In tech it’s very likely someone going from 5 days to 4 days could still achieve the same amount of actual work. As other commenters have said, many tech workers don’t do productive work all the time they’re present.

While someone working a reduced schedule in an office where other people are working a full schedule may be able to set a schedule that misses some of the things they consider nonproductive (and may actually be more productive/hour for doing so), I don’t think that actually is likely to scale to the whole office switching schedules. If the people in authority that think that the meetings you feel are nonproductive are essential are still in the same positions of authority, they’ll still have the same meetings at least the same share of working hours, though there is a substantial risk that some of them will instead take the same number of hours per calendar week, regardless of the reduction in working hours.