Disclaimer: I'm not an active user on ServerFault or associated with the close votes on your question, but I'll try to do an attempt here based on other sites' experience and what is available to me from SF.
Under what criteria is it closed?
Here is the close reason, emphasis mine:
closed as not constructive
This question is not a good fit to our Q&A format. We expect answers to generally involve facts, references, or specific expertise; this question will likely solicit opinion, debate, arguments, polling, or extended discussion. See the FAQ.
From the FAQ I quote, emphasis mine:
If your question is not about...
- Product, service, or learning material recommendations
Furthermore; a question should be practical, answerable and based on actual problems that you face.
It's a question about whether there are any solutions, at all, that meet the given criteria.
does not meet that criteria.
Why exactly is it closed?
Questions on any Stack Exchange website are about learning (see the last paragraph on the blog post you referenced), they are not meant to let others search for you. This is also why the page you get to see as a new user mentions to do your homework, showing that you really can't find anything.
What can I do?
That requires (quite) some search results to wade through, but given that a large enough share of the servers that exist are also Windows-based there should be search results for it. Worst case you'd have to come up with an alternative solution where you virtualize Linux or buy a separate box to use Linux on.
In any case, try to look further than a single ServerFault questions and you'll might find something that fits your situation. Alternatively try to see what other Windows hosters do, ask on chat or some forum. And if you really can't find a solution, you'll have enough to show us that you can't find it anywhere...
And then, you can go in defense of obscure, niche
hardware recommendation questions.