I see that behaviour starting to emerge, but you're right. I think this should just become the M.O.
Maybe also by waiting to start the meeting we're enabling it all too?
I find it all too much to keep track of, so perhaps simplifying it to "meeting starts at X, be there or be square" is all that's needed and behaviour will adjust accordingly?
Food for thought.
I've seen some comments that WFH and it's variations (full remote vs partial) are a skill like anything else and need to be developed. I'm not strictly speaking a fan of it all really, but that's just me, and I think the "more productive vs less productive" debate is actually a ruse and that the real argument we're all getting into is "this makes me feel better vs this makes me feel worse" which you simply can't logic your way out of, so I get that it truly does suit some people.
I think I just need to take the mindset that it's a skill I need to develop a little further and some of my gripes with it will ease or melt away.
Seems like, at least in my neck of the woods, 2 days WFH is becoming a standard benefit touted by companies to attract candidates now.