Religious. Open source versions of products that are created/supported by companies providing proprietary versions of the same product have caused me so many problems in the past that now I don't approve this practice.
It should be the same exact copy, or situation turns into "try demo version, buy the full product". At least from my point of view.
Once you have worked with the large cloud providers (AWS, Azure, GCP), you start to realize that solutions built on those platforms frequently differ a lot from what can realistically be self hosted. Especially when it comes to large SaaS platforms. They probably could not provide it even if they wanted to. Or it would be only viable to large enterprises being direct competitors, but not viable to a homelab.
I think it makes no sense for them to put much focus on developing a separate small open source version of their server. So it is good that they actually support its development.
It should be the same exact copy, or situation turns into "try demo version, buy the full product". At least from my point of view.