Note that “open-source” does not imply anything about quality, or your entitlement to that. As was already noted they’re selling access to a cloud product that you are entirely welcome to use if you do not want to think about how the code works.
Calling something open source to get traction doesn't entitle a project to much anymore, too. Gone was the time that open source was synonymous of creating public software while building a community. What we see here on Show HNs is pure marketing strategy.
