As I mentioned in another comment, it’s still a commercial offering, that happens to have a free tier. Would we be okay with a YouTube link in the same spot?
Honestly, it doesn’t bother me that much. It’s more that you can see a more and more corporate-y trend in Canonical’s decision making, which I personally don’t really care for. If I used Ubuntu with the default shell I’d probably just override the MOTD and go on with my life.