It's a pretty ridiculous scheme done just to copy Chrome, but it also doesn't do much harm in practice. But browser version numbers no longer really have any useful or memorable meaning.
I digress on that.
I have no fucking[0] idea if Firefox 99 is just a minor upgrade over Firefox 98 or it would completely change the UI and my UX with it. With X.YY to X+1.00 I could, at least, be warned what something crucial could change. Nowadays I'm the hostage of "We think you need to do things THAT way" of whatever fever at Mozilla corp at the moment.[1]
[0] I mean it.
[1] There was something about themes or colours or whatever in the last ten updates. Did you used it more for than a day?
You mean "disagree" here though - "digress" means that you step away from the topic for a moment.
From the topic of the article in this case.