What are you basing that on?

A quick google suggests that at one point 85% of users used extensions.. and as of last year it was still 60%

https://www.ghacks.net/2016/01/06/surprise-40-of-firefox-use...

And how many of those 60% just use ublock or something similar, which will continue working, and no other extensions?

That really wasn't the point of my post. The claim made by the parent post was that "Most user's don't use any extensions at all."

My apologies, I didn't mean to come across as disagreeing with what you said, but just to put it in better context for the larger discussion of how noticeable disabling non-web extensions will be to the average user.

You're moving the goalposts.