Don't disagree with any of that. On the other hand, I don't view that guy on twitter as guilty of that. He called out a behaviour he (rightfully) views as hazardous in real life, and then vented about it without naming names.
Except like the bully, he didn't bother to make any effort to understand that behavior before calling it out (and I object to your "rightfully"; we do not know that). He has no idea if those people are vaccinated, if those people know each other, if those people are expressing a political statement, a social statement, or neither, and yet he's rendering judgment. They are BAD, simply because he said so. By his reckoning, if he saw me last night, he would have rendered me "bad" without any understanding of my position, even though I followed every relevant guideline to the letter. There's nothing "rightful" about that, and I shouldn't bear that burden, anymore than you should bear the burden of being knocked in the noggin' with an apple because you like math.
You getting an apple to noggin for liking Math cause Math is Racist.
Unlike Newton getting an apple to the noggin because of Nature showing Newton and literally knocking on his head about Gravity.
But yeah, when not in businesses that require masks. You have no way of knowing who isn't vaccinated and who is. Just as you don't know who also has a different sickness that could just as easily get you sick. We've been told, even before Covid, to stay home when sick.
When you stay home, the chances of that passing onto someone lowers. And how did people stay home, the business of the world shut down, but life did not stop, and never does stop. The places where people mingle and gather shut down, but that didn't stop people from gathering outside in groups.
I do hope the businesses, and people in general are more aware now, that if you don't feel good, stay home and get better. The workplace can handle not needing you to work. Unless that business relies on you that much, if so, then that business should realize and learn not to rely on one person for anything.
Peoples mentality is just as important as a person's physical health. And this bullying and mob mentality, has affect on people's mental health. Which some people couldn't handle which led to the rise in suicides in this pandemic....