How to publish YouTube shorts using Vista Social

As of today, it seems that "Shorts" are just plain Youtube videos, because really any Youtube video can be regarded as a "Shorts" video by appending its id to the shorts route, even if it's a 24 hours long video, for example this one: https://www.youtube.com/shorts/4dhIvyskkB0.

So just upload a video.

However, it seems that the question should better be: What could raise the chances that a Youtube video be "promoted" by Youtube as a "Shorts" video?

To which the answer is: Follow Youtube's guidelines, provided here:

1. Add the #shorts hashtag your video title.
2. Add the #shorts hashtag to your description.
3. Make it shorter than 60 seconds