Strangers who use public spaces absolutely owe other people their consideration. It’s part of the price of admission to a public space. It’s not enforceable in practice but I’d be surprised if a certain level of being inconsiderate is even legal in most public spaces.
This whole thread is a great example of why I’m continually disappointed with Lemmy. Half the comments are just some variation of “capitalism bad”. I hate capitalism as much as the next guy, but it sure would be nice if people would stop grinding their axes for a few minutes to talk about the actual subject of the post. Or just not comment at all if they don’t have anything relevant to say.