I remember there was a way to disable annotations when they were a thing on youtube, but there seems to be no option for disabling end screen cards.
I just added ##[class^=ytp-ce-] to my ublock and they are gone. No more accidentally clicking on them while trying to pause the video right as they appear
bonus: use ##.ytp-pause-overlay to remove the annoying thing that gives you video suggestions whenever you pause a youtube video embed
