However, extensions using Manifest V3 can still update some filters the old way, without a full update to the extension and a review process by Google. These are called “dynamic rules,” and starting in Chrome 121 (which arrives in January, several months before Manifest V3 becomes mandatory), up to 30,000 dynamic rules are allowed if they are simple “block,” “allow,” “allowAllRequests,” or “upgradeScheme” rules.

Maybe the filter rules required specifically for YouTube don’t work with those rule formats, I don’t know! If they’re not, then Google still allows an additional 5,000 rules with more broad capabilities. Either way, the statement “whenever an ad blocker wants to update its blocklist […] it will have to release a full update and undergo a review” is not true and can be easily disproven by checking the Chrome developer documentation, Mozilla’s documentation, or a blog post that Google published a month ago.

Perhaps my reading comprehension is off here, but I don't follow the logical jump being made here. My only guess is that the author is reading claims regarding the need for a full extension update to update block rules as meaning that the extension update & review are needed for any/all updates to the filter rules. That seems a rather pedantic and ungenerous reading to me. Especially when considering that the impact on users is the same if an update to those 5,000 rules is needed to effectively block the most frequently encountered and obtrusive ads.

Regardless, I think I'll take my info from the folks developing these tools rather than someone who admits to not understanding how ad blocking works before acting on their urge to correct "someone who's wrong on the internet." 🙄