This shows a fundamental misunderstanding of OSS.
You're essentially saying that only users who contribute to OSS are worthy of attention and support. This is no different than saying that only commercial users, or those from specific countries, backgrounds, or industries are worthy of the same.
Those users who create issues, request features, and, yes, ask for support, are as valuable as those who contribute code or money. They're all part of the same community of users that help build a successful product. And they do it for free for you, because they're passionate about the product itself.
If you think otherwise then you should make your terms of service explicit by using a restrictive license and business model. OSS is not for you.
Yes, some people can be rude, demanding, and unworthy of your attention. But you make those boundaries clear, not treat all non-paying users as entitled children.