The fact is, it was only "100% remote" being forced into existence by the pandemic that is allowing us to even have the debate. Outside of tech almost nowhere allowed remote before.

Musk represents the old guard who liked making people suffer these horrible commutes and office environments just to make senior mgmt feel important.

As a result, I think it's important to defend 100% remote as a pro-employee position, and then look to optional onsite as a way to mitigate potential issues such as isolation, young folks with roomates etc.