One of the koolshare devs used to publish his code to Github a few years ago, back when he first forked away from my code. He stopped updating his repo one or two years ago, and I had assumed he had stopped development, until I saw your post. I'm not annoyed for legal or ideological reasons - (I'm more a follower of Torvalds than Stallman when it comes to open source code). I'm annoyed because these guys take my work (and that of everyone else contributing to the original code, which includes the Tomato devs and Asus, among many others), and they don't give back a single line of code to the community.
And there's also the more serious legal issues of allowing to run proprietary products on non-licensed devices, i.e. offering AiCloud or AiProtection on a non-Asus router.
I won't ask you not to discuss it on the forums - you're still free to do so. I will simply have the same stance as I took with Xvortex, another fork developer who doesn't follow the GPL requirements: I will acknowledge their existence, however I won't provide any support to its users, and won't recommend people to use it either. I would just ask you not to provide any download links on SNBForums (because that could legally put SNBForums - and yourself - into a potential grey area from a legal point of view.)
Following the GPL requirements would be dead simple: all they have to do is provide the source code to any change they did to the GPL code, and provide a way for anyone to recompile their firmware out of that code. If they still use a git repo, just make that repo public, otherwise provide tarballs containing the code. Aside from allowing the original developers to get back code for their own upstream work, it would also appease the mind of people about what they are actually running. Because let's face it, a router is a pretty dangerous place to run code coming from an unknown source, who seems to want to hide from you the actual content of that firmware.