You don’t need Privacy Badger when you use UO, since that can block trackers too ( only if you enable filterlists ), as for Malwarebytes that too is redundant with UO, ( matter of fact it makes them both perform poorly ) = Get rid of MalwareBytes
Ads can be scams, and they can take you to websites that automatically download malware to your computer, ( that’s why I disable automatic downloads ), they get filtered out with all other scam and shady websites, So yes by asking you to disable your adblocker Google shows they don’t care about your security.
Another workaround is to go to settings > privacy & Security > Manage Cookies & Site data > Click on YouTube .com > Click remove selected > Save Changes. ( this should work even if you’re logged in to YT and it won’t log you out ) ( although adblockers are against their Tos now so don’t risk your account )