I’m not familiar with Piped. I don’t know if your link won’t load because it uses some kind of non-free javascript that I have disabled on my machine, or if the services is just slow or what. I assume the video you reference is the same as this one accessed through invidious Aurora Users: Proceed with Caution!
Pipes is an Invidious instance. For some reason the only one supported for link sharing on Libretube
hmmm…so it’s some kind of fork from Invidious, and not just another instance.