Is it even possible to create custom project templates anymore?

I followed some videos and found some that showed you could create a new project template to select in the Unity Hub.

But even after following multiple blogs and videos, it would just not work. I found some comments on the videos that made me think it may no longer be a viable option and was never supported to begin with.

I ended up just slapping a base project in a repo but its not as good as the other way wouldv’e been as it requires more steps.
Anyone know if it actually is supported, or if it still works?

It was barely supported in the first place.