Hmm I understand not making it too complicated, but I still dont like the current behaviour that much. Way too hard to find the embed button, it should probably be the biggest one. Check out how Mastodon does it, the entire preview is replaced by the embed, the preview doesnt even have a clickable link.

Edit: Okay I’m wrong, Mastodon has two seperate buttons on the preview, one for play (embed), and one to open the link. Plus some additional text. Anyway it looks much nicer, and its obvious what each option will do.