Most servers are not able to access the Google API.
Invidious report of the same(ish) problem: https://github.com/iv-org/invidious/issues/4045#issuecomment-1674373088
LibreTube existence is built upon Piped as far as I know. Even the developer wants you to donate to Piped instead of LibreTube as far as I remember.
Isn’t Piped the only way to easily mask YouTube history with Google? So I think we should be very thankful of the existence of Piped
Yes, it does help to mask your IP address, but often I have faced issues with Video not loading.
I have found LibreTube to break more often than NewPipe due to this. There were instances where I was forced to use the Browser to watch the videos as Piped servers were having issues.
I honestly love all the efforts made by the devs of both to make YouTube so much privacy friendly and ad-free, but from POV of reliability, it just sucks for me.