In case anyone from Budibase ever sees this, I did want to say that I understand needing to make money from what you do. I don't have a problem with open source projects having an enterprise version with additional features as long as they don't consider basic SSO to be an enterprise feature.
Lots of other features like auditing, group and role based access controls, commercial database drivers for Oracle and others, high availability, multi user collaboration, rebranding, live deployments, project management features, etc make sense being enterprise only features.
If your self hosting and need all that other stuff then you probably should be paying for the software. Plenty of other projects like GitLab and Coder work this way and the open source version isn't limited in a way that affects hobbyist.
Budibase advertised their free/oss version as being unlimited users since the very beginning and it's a real stab in the back for anyone who's contributed to the project.