

Doesn’t have to mean much at all: https://librewolf.net/docs/faq/#im-getting-sec_error_ocsp_server_error-what-can-i-do
Since I also get these from time to time with similar setups, I usually just switch browsers temporarily (after some time it will probably work again). Since my setup uses 3 browsers regularly, it’s no big deal for me. It also rarely occurs so it’s only very mildly annoying. As usual, with a more secure setup you will automatically get a couple of usability issues as well. Can’t change that, it’s like a law of physics. If it annoys you too much, you have to disable this security feature in the browser settings.
By the way, ignoring as much of this big tech corpo crap as you can also makes you live an easier life.
Whenever I see a story of “some guy who relies on <big tech account> working loses access to it and suddenly can’t do anything anymore” I think “this can never happen to me”. Which means there’s a whole category of problems you’re suddenly never going to see. It also means you’re less naive. So just don’t vendor-lock yourself in. Don’t put a log-in for an account which you don’t control in front of important things you need to do. Simple as that.
On top of that, you’ll also leak less private data about yourself and probably others as well. So you even make yourself less of a target when it comes to data protection laws or something. I know, these get routinely ignored. I’m just saying, if you don’t even use the problematic stuff (or almost never), you’ll also have potentially less legal troubles at hand. And you never know, legel troubles might not appear for a while but they could lurk far in the future. For example, many Nazis got into legal trouble for their participation in Nazi Germany, even decades later.
I know, the guy from the story probably only needed that account to ensure he can compare some stuff with how MS Office is behaving compared to LibreOffice, or things like that. So it’s probably not a big deal. But generally speaking, you really shouldn’t vendor-lock yourself in.