That's pretty much what I do with both Firefox and Vivaldi. Occasionally there is a delay in the video starting. My guess it's the time delay where an ad might be, but I'm not seeing the ads.Just right click on the YouTube video in Windows Edge and select "Open Link in Private Window"
Works great no adds, no blocks.
After viewing the video in a private window, if I wish to make a comment or up-vote the video, I'll bring up the video page in a regular window and do it there without having to play the video/ads.