So I recently installed Debian 9.0 and tried to get my WLAN adapter working. As it's not supported it seems I have to get a new one. I was surprised to learn that there are almost no WiFi adapters with Linux support out there.
How can that be?
That can't possibly be a natural state as quite a number of people are using Linux and hence are potential customers of such products.
What I expected (after accepting that I have to get a new adapter and excluding that I expected compatible adapters to be sold in local/offline electronics stores): pages which show me the exact models of WiFi adapters that are known to work with Debian so that I can order them over an online store. And a page (preferably of the manufacturer) for the bought model that describes how exactly to get them to work under Linux/Debian.
What I got: a sparse number of pages with "chipset" information and only 2 blogentries that describe how to set up only 1 adapter of which 1 was only reachable via the google-cache and the other has no clear instructions but a multitude of information of personal endeavors and problems and commands which will put off any newcomer. (And in addition to all of that it seems non-FOSS firmware is required.)
To fix a problem one needs to first identify the issue/s and hence I would like to gain some insight into why this current situation is as it is.