Still work: if it’s preventing you from focusing but not personal time, it’s work. Your employer choosing to waste your time on low productivity meetings is something to try to improve but you shouldn’t feel any obligation to make up for it with your own free time.
A Zoom call you can basically ignore but have to be around. Still work but not "working".
While not impossible, I find it implausible ;)
Eg when I am oncall out of hours, I could browse HN almost all the time, but it is still low-intensity work, even if nothing breaks and pages on that day.
The idea was two-fold: reduces paperwork, and incentivizes the SRE team to reduce alerts that have to be dealt with.
In any case, my main point was that anything that prevents me from having a beer or going bungee jumping is 'work' in my books. Though, obviously, there are different levels of intensity.
Not using part of my life in the way I see fit because I need to make a living? Work.