Google AdSsense has always been able to bypass adblockers, as other advertisers have worked to do. At least in the "they could if they tried", they obviously have the technical prowess. But they haven't because that would be a scandal and invite scrutiny that they likely want to avoid - they own a massive part of the market without resorting to such things, it's not yet in their interest to do that.

So yes, as I said, maybe this is step 1 in a longer term plan to completely remove adblockers. Maybe one day so many people will rely on adblockers that Google is forced to take a drastic measure.

I personally don't expect that to be the case any time soon, but that's really not based on much.