If you are blocking ads now, the videos will start in a very delayed fashion almost as if the server is waiting the length expected for the ad to take before streaming you any bytes.
The worst part is if someone doesn’t put 2+2 together and starts blaming their ISP for poor load issues because their Youtube “keeps buffering” because of this continue cat-and-mouse game messing with the player client.
I do not enjoy having to troubleshoot “Youtube isn’t working” calls where it’s because of this adblock ‘protection’ bullshit.
It’s just as bad as Ad-Shield’s bullshit “an error occured loading this page” — no, the page loaded just fine until your malware decided to dump the CSS and hijack my pageload to some “error-report.com” website to tell me my adblocker did it.