Welcome to the Make community!
Yes, Shorts are just plain YouTube videos. You need to add a specific hashtag #shorts to your title and tags and it must be under a minute.
You can just use the YouTube “Upload a video” module.
For more information, see Is it possible to upload YouTube shorts via the API? - Stack Overflow
Hope this helps! Let me know if there are any further questions or issues.
— @samliew
P.S.: Did you know, the concepts of about 70% of questions asked on this forum are already covered in the Make Academy. Investing some effort into it will save you lots of time and frustration using Make later!