If you go to uBlock Origin’s settings and then select ‘Filter lists’, there’s a list maintained by EasyList and another by AdGuard that both block cookie notices. To my understanding, this isn’t enabled by default (at least it wasn’t when I installed uBO).
Apologies if this is common knowledge; I didn’t know about it until recently.
Why YSK: Cookie consent pop-ups are annoyances full of dark patterns designed to frustrate you into affirmatively opting into superfluous data collection and letting companies profit off your information. Saving just a few seconds on pages you browse adds up, and this is especially true if you use something like Cookie AutoDelete that makes your answers to these pop-ups transient.
StackOverflow was my inclination for searching this last week because it pops up the massive cookie banner on EVERY single page load for me. I enabled both the “Cookie Notices” and “Annoyances” lists at the same time - one of them handled it and I think it was Annoyances if I’m remembering correctly.
Try enabling that one too if you haven’t already.
EDIT: Just realized I need to enable the social widgets list too : D