People becoming blasé about health issues does not mean those health issues have gone away.
I try not to base health decisions on vibes. If anything, other people taking things more casually just increases my risk.
I'm not going off of vibes, either. I'm going off of real-life observations. COVID isn't a big deal anymore. Not where I live, anyway. People aren't afraid anymore. In fact, people feel stupid for being so afraid in the first place. We prefer to live our lives. If that means I'm "taking things more casually" than you would like, well, that's on you. Not me. I will continue to go out in public places and not be afraid.