OT: Just decided a new reading rule for myself: when a popup interrupts my reading I'll ask myself "Does finding out what this says based on what little I know so far matter to me?" If the answer is not a resounding "yes!", I close the tab.
I often enter in something along the lines of "ffsgivememorethan5secondsbeforeaskingmetosignup@notcoming.back" with the hope that a human reads the email logs at some point.
If you use uBlock Origin, I highly recommend enabling one of the "Annoyances" filter lists (EasyList, AdGuard, and uBlock each have one. I use EasyList.)
Besides mailing list signups, chat widgets, etc. it also blocks GDPR cookie notices.