It is a double edge sword, what do you want
- Quick releases with loads of bugs?
- Long delays between releases with no bugs?
Sure the developer could hire additional staff to work on the game, but that did not work out too well the last time round.
The bugs have been acknowledged and a fix version is on the way for the latest release.
There has been no release ETA announced for 1.9, just a quarterly window. That suggests the developer is learning from their mistakes.
Your subscription is mostly for the Roundscape project, not Starmaker. That is made very clear.
Most bugs can be worked around, all you have to do create a post on itch and someone will be more than happy to help.