personally: only second-hand info about reddragon keyboards.
The pricepoint is low, don’t expect premium experience. It’ll do keyboard stuff just fine, most likely.
Also, apparently the customization app doesn’t work at all on linux, even through wine. EDIT: openrgb does support some reddragon models, but only mice. https://openrgb.org/devices_0.9.html?search=red+dragon - but, keyboard support might happen?
I guess just because how the question was laid out, I’m disqualified as I was taught how to use it the first time I used it. :P
with my first linux -system, I had an experienced friend to hold my hand while installing, configuring and usage - including vim. So, the first thing he taught me was how to exit it. This was sometime in … 2003-ish?