Mildly informed speculatuon:

In-browser ad bkockers may use anti-anti-ad-blocker filtering rules.

I am pretty sure uBlockOrigin does this by default. But I can’t be sure about the rest at the moment, although my guess is, even the other ad blockers will likely allow at least optionally to set up a filter to remove anti-ad-blocking code from your private copy of a web page you’ve loaded from the net.

DNS filtering naturally will still load all the anti-ad-blocking code, because DNS filtering does not analyze the contents of your private copy of the web page in question.

I am of the opinion that you should NOT have to know all this before you can have a decent and safe experience on the net. It’s shame.