List-type questions can be okay. You said in your answer:
We don't allow list questions because the list has to be maintained in order to be correct.
This isn't the problem with them, though; many good answers are susceptible to needing maintenance. The problem is that if we had a question asking what kinds of weapons exist (so that someone can put them in their middle-aged combat game), answers would go on forever listing various combinations, people going "hey wait you forgot about this culture's inventions," or "that answer which brought up that culture was not arbitrarily comprehensive enough and missed these ones."
All the answers would be equally valid; none necessarily more correct or incorrect than any other. There basically becomes no point to voting or the accepted answer mechanism; people just pick the answers they like, or which are well written, etc.
The work we do with game-rec questions is to get them into a state where we can actually objectively rate answers, for example.
This problem is not suffered by someone requesting a resource. Whether the resource being requested happens to be a list is also neither here nor there, as long as the question itself is not going to spawn an endless series of equally valid answers.
Answers that exist to link to something else can be okay, as long as they're not literally "link-only" answers. The actual context is answers that are:
barely more than a link to an external site
This captures answers to a question that just say:
That does sound tricky. You can read about how to do this in my blog here.
No thanks! Provide the answer here.
But we have lots of questions that request resources that need linking to. That's most of our tool recommendations, for instance, but they are not just link-only. In my recommendation of Chaotic Shiny's generator on that question, I describe how to use it, what it does that the asker wants out of it, and so on. If I'd just said "hey use this" I'd be rightly downvoted into the dirt. But I can't exactly provide the generator in my answer: I don't have it.
Sometimes questions come up and request something that must be resolved with a link. But that's ok. That isn't the link-only answer case, which describes someone putting zero effort into their answer and sharing nothing with us.
If the link dies on a link-only answer, there's no point to its existence: the answer was contained elsewhere, and its only point was to forward people there.
If a link dies on an answer to a question like this, though, that is unfortunate. Happened with a lot of our WotC links when the site layout changed. Hopefully people can do research and see what happened to Chaotic Shiny, if it ever disappears - maybe the source code can be shared.
That means it comes down to this:
- List questions: bad. Need work.
- Questions asking for a link to a resource: fine, we have loads, so long as the question has the requirements defined enough to not be a list question.
- Questions asking for a link to a resource which is a list: changes nothing.