Re: It's about conversation
There's nothing wrong with socialising with chosen work colleagues. There *is* something wrong if you socialise only with work colleagues, or even outside work if you socialise only with one group of people. Always diversity your friendship groups in case one ends for whatever reason and you're left friendless, to provide different life perspectives, and to find new experiences.
As to communicating electronically, if multiple people contacting you is an issue, most telephony or meetings automatically places you in Busy, and it's also possible to do so if a specific conversation is taking up most of your head space.
There's plenty of spontaneous conversations possible remotely, and as for contacts outside your own personal silo this is no less possible than in real life. The physical proximity argument is a con, especially when the people you mostly contact are in a city hundreds of miles away, or 3,000 miles on a different continent.
Caring about each others' well being is an entirely optional part of a job. Most colleagues may be pleasant enough, but they are not your friends and it's important to remember that. Also, yes, I do occasionally contact colleagues to see how they are, especially if I know they've had life issues, or to arrange socialising outside of work - this is all possible electronically without going into the office.
After an initial varied start, which was more related to the impact of the pandemic than technical issues (none : other than initial VPN capacity, and invites for some staff to retrieve peripherals/chairs etc from offices) I'd say collaboration is better than ever and that for many staff it's much better for their health and well being.
It does depend on personal circumstance - some people are not in a position to have or cope with an effective remote working setup in their home. However, others are able to communicate effectively, and take advantage of a lack of commuting to fit in exercise and chores leaving them more healthy and happier. Pushing employees back into a model that does not suit them will only breed resentment.