If you set up Privacy Redirect to redirect YouTube to a CloudTube instance, video embeds don't work.

Here's a webpage with an embed https://hackaday.com/2017/08/17/secret-serial-port-for-arduinoesp32/ where https://tube.cadence.moe/embed/GwShqW39jlE?version=3&rel=1&showsearch=0&showinfo=1&iv_load_policy=1&fs=1&hl=en-US&autohide=2&wmode=transparent&autoplay=1 returns a 404.