There is no logic problem.

You are being offered the opportunity/option to test-drive a product in its production stage. It is your choice to do so. Nobody is forcing you to do anything. Hence, you are also invited to voluntarily report any bugs, issues and even suggestions to make the product better. Again, it is your choice to do so. You can test it on the live demo, or in your own server, at your own risk and free will.

The developer has repeatedly stated that under no circumstance you should see more use the current beta version of the project on a live environment and that you should wait for a final release to do so (i.e., final release of the product is not an RC version).

So, if you want expect full functionality of all features, scripts, modules, etc., then wait for the product to be finished and released as "final". If you wish to voluntarily take part on the testing and bug-reporting effort, then do so in accordance to the instructions and materials provided by the developer.

Yes, you may obviously suggest beta-enhancements such as the possibility to upgrade between beta versions, but, this is so old now. It has been asked over and over and the developer has clearly stated, over and over, that such enhancements will be included in the RC TESTING phase. Can't deal with the, indeed, cumbersome processes of installing and uninstalling beta versions, then don't, and wait for RC1 as the developer has said. It that does not work for you either, then... don't put yourself through it.

This whole business of DEMANDING such enhancements over and over (especially when the developer has stated, clearly, that those are not the plans), or continuously complaining about the development process and inferring that it (the development process of an unreleased software) is affecting your own private site development plans has got to stop. Revise your own plans instead for when the software is actually released to the public. There is a final Dolphin product released for you to use and request support for: the 6.X series.

If you are an extremely experienced user and have decided to use the in-production version of this software to start development of your own sites, you KNOW you are trying to get started with a software platform that is FAR from being released as final and stable, and you are doing so at your own risk AND against the advice of the developers of this software.

The logic problem here seems to be, however, that a few users are not observing the difference between a "beta" an "RC" and a final, public-released product.

I'd be surprised if a final, public-distribution-ready D7 is actually released before the end of the year, and I have the feeling that many here should wait for that to occur.