I’ve done that plenty of times. I’d encourage you to do so too. You’ll be shocked with how many people you thought you knew say something to the effect of, “but I like the things that get advertised to me and I’ve clicked on a bunch of them and bought things from them! Why would I want to block them?”

I’ve even explained the whole thing about companies building flawed profiles on people and how governments and bad actors can use them as a reason to investigate you. This works with people I know and get along with well, but doesn’t seem to make any difference with others.