To encourage the use of privacy friendly frontends. The direct YouTube link is provided for those who prefer it.
Correct me if I’m wrong, but you’re essentially suggesting it would be better if the process you currently experience, of having to click the post and then the alternative link, should only be forced upon the privacy conscious people, and you should receive the prioritized experience of clicking the link directly to YouTube, as is expected behavior.
But I would argue that’s exactly why I post it in the way that I do. The majority of links are not catered to privacy users, they are direct YouTube links. Is it so terrible that I choose to cater to those people who usually are not?