Almost certainly so. Apple has built chains of certificate trust very deep into the OS, along with apparently an assumption that this particular revocation service check is reliable & fast enough to call out to the network a lot.
Imagine how many people would lost their productiveness, maybe not at the big corps or govt (I assume they use a version of mac that call somewhere else/don't). But very very many people.
First time ever I'm genuinely frustrated with apple - macs are not those unicorn tools anymore that work reliable
That might be what we just saw happen.