People used to post Piped/Invidious links all the time, but that eventually became a problem because it meant the link often went to a different proxy than the one that might be a user’s preferred server, and it made it harder to copy the link for use with a preferred server. After some discussion, the consensus became that people should just post the YouTube URL as the main link so users could utilize the preferred proxy they likely already have configured, and then (optionally) include a Piped/Invidious link in the body text for those who don’t currently use a proxy but would like to try it.