Last two weeks every time I use Piped I am getting error "Sign in to confirm you are not a bot". It happens on every instance and videos work very rarely. It seems like Google enforces you to log in if you try watch lot of videos from one IP. I hope this will not be end of Piped and there will be solution for this problem.
google has been blocking any IP that uses lots of youtube bandwidth, and that means any public instance needs to do IP rotation.
I also heard they began blocking all IPs belonging to some cloud providers.
I run my own invidious instance from my home servr. Only I use it, so it'll never be blocked, but I don't have the same anonymity as if using a public instance...
It's mostly for the benefits of using youtube ad-free without a google account, while having local bookmarks, watch-later, and subscription feed. If that's your main goal Invidious is really easy to set-up.