Hey, It's me the guy who made both those things.
We spent along time removing all non essential cookies from the site, so i'm not sure what your getting. I just panicked and tried on vanilla chrome, and couldn't find that cookie? We have no GA but use fathom instead. But if it's there I want to remove it asap. Let me know if you have any more info
I think there is a browser extension for this. I forgot what it's called but it partners with the cookie banner companies, so that it automatically sets your preferences on most websites.
I may be completely off, but would love to get this resolved.