Spotify actually has supported video for a while (https://support.spotify.com/us/using_spotify/features/videos...). However, the feature itself is horribly hidden. I have in the past accidentally come across music videos, but right now can't intentionally find any video content to cite as an example.

Edit: Another article discussing Spotify testing video content https://www.theverge.com/2020/5/6/21249389/spotify-video-pod...