I think its more that other workplaces do not have this kind of interaction. I have found that a 30 second conversation might take a 1 minute call now but certainly a 30 minute call sounds absurd.
For me time has stayed the same. I start and finish at the same time and I go for lunch for the same time as I did before. I don't have work email or IM on my phone so once I close my laptop work is done.
It is absurd, but people do it. People are always late to meetings. Then 5 minutes of kibbutzing since many have recommended personal chit chat as a way to connect during lockdown. Then there are people who just want to hear themselves talk. It happens.
In a normal office you could streamline some of these but in lockdown you can't.
It's great that you don't have this experience. Consider yourself lucky. But I was responding to the generalization that people who don't have kids "love" WFH. I do not have kids, do not love WFH, and anecdotally from my professional circle my experience is not that uncommon.