This is another thing that is a solid “no”. We will never do generic UPnP support for arbitrary devices. You can discuss it all you want, but people will keep bringing up the fact that we have stated that this is a solid “never gonna happen”.
In my opinion, as long as you can keep the talk civil, go for it… but you’ve heard our answer.
Here is an existing feature request that is boring enough that no one has ever closed it out: