I guess it really depends on your point of view.
Purism’s view is that FOSS software and hardware are the only answers. I strongly disagree, but that is beside the point. They aren’t going to be fulfilling their goals if they help people to do the opposite. It also cuts into their profits if they encourage people to use PureOS on non-purism hardware.
However, the point of view I’m really talking about is the amount of work the individual with the question must do. If the OP would have, for example, done a simple search on this forum or this information, they most likely would have been able to figure this out on their own. However, the scope of this thing, is in general far beyond what most people are able to do.
The truth is, if simply installing Linux and using it doesn’t work out of the box, it is beyond most users abilities to fix. Linux is not intuitive in anything other than web browsing, checking mail, and using other applications. I mean adding a repo is difficult for the average user, let alone finding a device driver and installing it.
I think making a wiki for PureOS is just a mountain of work, that no one is ever going to scale. It is also a rabbit hole of near infinite depth.
If I were Purism I wouldn’t touch it with a ten foot pole.