I think if gamers play any type of games including Android games on a Android PC device like a desktop or laptop with a keyboard and mouse, the Gamer is considered a PC Gamer because they are not using a mobile device like a smartphone, handheld or tablet to play games.
There are also now Android Operating Systems like Remix OS which are designed for Desktop and Laptop PCs, so I think eventually companies like Valve/Steam, and GOG will port some of their PC games to Android when there are more people who use an Android based Desktop Operating System like Remix OS on a PC.
There are also now Android Operating Systems like Remix OS which are designed for Desktop and Laptop PCs, so I think eventually companies like Valve/Steam, and GOG will port some of their PC games to Android when there are more people who use an Android based Desktop Operating System like Remix OS on a PC.