Just like you, I don't want to interact with cookie warnings at all so they have been annoying me to no end.
I even tried writing my own bookmarklet to hide them by setting "display: none" on these elements. But it sometimes fails on Stackoverflow sites, and I didn't look into it further.
I'm glad you found this useful. But it doesn't work on every site nor on every cookie warning. On some of those sites you can get rid of it by switching off javascript.
