I used to see only that, but lately I've been seeing cases where once you choose the "manage cookies" option, all the nonessential cookies are opted out by default.
I hate these dark patterns and in spite I do lose my time to uncheck everything I can, if I can't untick everything in less than 20 seconds I simply close the website, no matter what.
Personally I use the Lockdown app which seems to block a lot, but suggestions about better alternatives are welcome.