ok, so i added this code to my ublock origin filter list, then went to youtube, and the injected ads were still showing up in about half the vids. closed firefox, reopened, same. rebooted my win11 machine, now the injected ads are NOT showing up any longer. not sure if youtube switched it off because they're still beta testing this bullshit or if the code is working but it SEEMS to be working. if it stops i'll come back to edit this comment. thanks for the tip man!