I hadn’t really paid attention until I saw your post.
About a month ago I downloaded/installed the trial version of Malwarebytes. I promptly noticed that ads in YT videos became glitchy, but then forgot about it because I rarely look at YT unless I’m looking for something specific.
About a week ago or so the MWB trial expired and I’ve procrastinated uninstalling it to rid myself of the nag screen to get me to buy it.
Since then, I noticed both while the software was active and after the trial expired that some websites linked on FR wouldn’t let me view articles with large banners “you’re using an adblocker”).
As well, after seeing your post and confirming it last night, it appears that the expired trial of Malwarebytes has CANCELLED ALL ADS on YT videos.
FWIW
Interesting side effect huh? I tried Malwarebytes YEARS ago but was never happy with it, and I’ve seen a few negative reviews about it over the years. But maybe it’s something to try if all else fails. Thanks for your input.