Can this create a new webform for a user from a template?

Sorry @bogdog400 for this very late response, I must have missed this issue completely.

To your question:

1) New user creates account.

This is part of Drupal, I guess there is no extra action required.

2) Pays Commerce and gets assigned a certain role.

This can be done with commerce already, or is there anything missing?

3) Gets a slightly personalized Webform created for them from a template. Only this new person should get access.

That's interesting. To find a way to achieve this, I wonder how you would go about this when you did that manually. Are you planning to create a webform for each user, where each of those webforms then only ever gets 1 submission? To what degree do you personalize those forms?

At first I'm just trying to make each webform a copy of the template with no customization or personalization. Obviously the user can do this manually after the fact, but I would like them to be spared the job of simply duplicating the template.

There are 2 actions Config: read and Config: write in the eca_config submodule, which allow you to read a config entity, make some modifications to it and then save it under a different name.

Thanks. I'll check them out.