I Don't Think Blocking Should Be Abused

Wow. I just had a strange experience. I was going through my messages, and had a Ifrom a woman in her 30s where we had been discussing her isolation being bi in a southern US town, and then I got a phone call and was gone for 30 minutes then got something to eat and came back and opened up SW again and had a nasty message and was blocked by her because she said I was rude for not telling her I was leaving. Gheez. I didn't know I had to tell everyone I had messaged that I was leaving, but that is surely bizarre to be blocked. I have never had that happen before. Apparently from all the comments on the subject there is a tendency to block for no particularly good reason.