Burnout is not saying the probably wildly offensive thing out loud because you cannot be bothered listening to the offended people.

I'm at the point in life where tact isn't as important as it used to be

Well you SHOULD listen. Being offended and saying so has been the fashionable sport for some years now. And if you arent personally offended, then you take offense on behalf of people who arent but ought to be. If you arent constantly on the lookout for opportunities for policing what people say, you may as well become a hermit

Thats how I feel these days.

Not for me. For me, burnout is the point when I stop being polite and say what's on my mind, because I no longer give a fuck who gets offended.