As far as I can tell, this doesn’t reset the algorithm for YT recommendations for your account.
Does Not Work. Its all smoke and mirrors. You can create new account, disable YT history altogether and it will still keep learning and recommending garbage based on a milder version of what you previously watched.
I get similar videos recommended to me on computers I've never watched similar videos on before. They track you by more than your computer. I've had videos recommended to me on my computer that were interests of friends who had visited me at my house and watched youtube on their phones and the same has happened when I went to their house. I would be recommended videos within their set of interests.
You really have no control over what google knows about you or who they think you are. you can't change browsers, computers, or even your location to get away from them.
https://support.google.com/youtube/answer/95725?co=GENIE.Pla...
You can also configure it to automatically clear anything older than 3 or 18 months.
Or follow this link to go straight there: https://myactivity.google.com/activitycontrols/youtube