I don't think its right to downplay another persons suffering. We are social creatures and many people were put into situations that both actually isolated them while revealing the shallowness of their suposed support networks all at once. That's more or less what this person is explaining / venting about and it. I don't know if you've ever been isolated and / or lonely, but once you are you realize it is not a state we are built to withstand.

social distance means different things to different people based on where they are and their situation. For OP social distance seems to have meant spending all of their time completely alone in their home as leaving it was actually illegal. In addition they found out that none of the people they considered friends really cared enough to even reach out and see how they were doing. That can be quite a slap in the proverbial face and it is jarring to discover you are alone in the world.