When you say "ignore" do you mean a) you see it, read it, then delete/ignore it; b) you see it, see you don't recognize, and delete/ignore without reading; or, c) you never see it because of app/OS settings filtering it?

I am pretty solidly in camp A, I will read every text message that hits my phone but if it's spam or something like that I will just get pissed off and remember not to give that company/person any money ever. But I still read it.

I have disabled message notifications from unknown senders. If I'm expecting one (e.g. an activation or 2FA code) I just watch for it.