We've listened to your arguments and complaints on the publicly visible Discord and even replied to them, and your response was to use straw man arguments to our replies and/or outright ignore them entirely. Therefore the thread about it was closed and locked, as none of the people there wish to be dragged into something that will endlessly continue until you get your way.
We've explained to you why this model was chosen, how the funding is used, and how it all works. We've even given you alternative ways to continue using StreamFX without funding the project, as you appear to be completely against paying someone for their time. Unfortunately it turns out this was only for you to spread misinformation, as you make up numbers that you have no way of knowing.
You will eventually have to realize that there will be no development on this project without funding. This has and always will be the case, as my hobby projects and interests have shifted quite a bit from when I started this project. Open Source is not free to maintain, it just means you can see the source code and build it yourself.
Also note that Stable versions are marked Stable because they contain no known bugs at the time of the release. This was also explained to you, which you completely ignored too.
There is a (silent) majority that agrees with the model, even if the price is higher than they expected. This majority also understands why this is necessary, and even has suggested additional monetization models to secure more funding. I'm not quite sure on future plans, but it is likely that one or two of them will end up implemented.
It is safe to say that as long as funding is there, StreamFX will not be abandoned. It will however be abandoned the moment funding ceases to exist - just like it had been up to the day I made the decision. This is why there had been no full 28.0 or 29.0 release.