I think this is a large part of it. For me certainly I realized during the pandemic that I was starting to feel really isolated and needed to make a conscious effort on my social life, but I also think this was a net win. True friendships are formed and strengthened by putting in effort. Ephemeral office connections are fleeting. I think if your social life dies when working remote it's a sign of a problem the office was papering over.

I also believe there are those for whom this is not enough and they really do need more time around people than can be obtained outside of work, but there are solutions for these people as well (ex co-working spaces)