Ublock origin on firefox. Never forced an update, never did any fiddling with block lists. Never got a single warning or notification, still works perfectly. Huh.
I'm also using ublock on Firefox, I had plenty of notifications over the past two weeks, I have even an Invidious redirect set up, though admittedly ublock is winning RIGHT NOW.
I'm in the same boat whether on Windows, macOS, Linux or Android. But my sister, in the same household, also using uBO on FF, has been getting the message constantly
I get them every now and then, but refreshing the page fixes it every time. I’m not logged in to a Google account and my browser is set to clear cookies for all but a few domains on restart, so maybe that’s contributing? Don’t restart often though.
My sister found that it outright blocks her. She is signed in.
^But she also found that the player loads a split second before the message so if you full screen the player before the message you're good and can keep on watching away with no ads..^
I did get the splash notification about adblockers a few times ago on a linux garuda system with firefox and ublock, but after popping up on two videos it was gone.