A while back Linus Tech Tips said ad blockers are a form of unethical piracy. His audience accused him of spreading self-serving bullshit. Oddly, his position changed a few years later and he started promoting adblocking.
The chance that he was using one the whole damn time? 100%
back in the heyday of the daily wtf there was a beautiful submission from a developer who worked for a banner ad company. got called into a VP's office one day and yelled at because some new annoying ad wasn't showing up where intended, a bunch of debugging later it turned out that the VP was running an ad blocker and had just forgotten about it.
The chance that he was using one the whole damn time? 100%