As a paying customer I'm concerned about the company's focus being blurred when there are 3.8k open issues on their Github repo and my company has been tracking some particular issues for years without progress.

I feel exactly the same way.

So many open issues, the majority thoroughly deserving of a resolution.

I would rather they get their house in order on the core product first before rushing out shiny new things .... because the shiny new alpha/beta things will only exponentially increase the number of open issues.