I am exactly the same. I use UBlock Origin and Privacy Badger so pretty much nothing gets through anyway but just to get rid of the banner, I click on OK.
However, that being said, I only do it if the other choice is "Manage Preferences" or something equally vague: If I am given a clear yes-or-no choice, I always choose "No".
And yet the cookie is still there and can be used to track you. They don't need to serve you adds to track you. A simple check for the presence of the cookie is enough to track.
I see no reason to turn off Performance and Functional in most cases.
I agree with the broader point, but principles of a nice user interface also apply here.
Unless the website tricks you into clicking a button that you did not intend to click (like with your double negative example) it is not a trick. If you do not read and just click the most colorful rectangle to make the pop-up go away that is the user problem even under the GDPR
I guess where the article falls flat is where the author says a "proper GDPR content banner" was implemented. No online publication will do this. At least they will trick you with button colors, or some kind of double negative mind trick. Sometimes they will require you to tick all the checkboxes out.
GDPR was a good idea from the start but it's implementation is rather dull - they shifted responsibility to each country without penalization for relaxed enforcing, and now there are countries like mine (Portugal) where we have less than a hundred fines.