It is NOT bad for business. People who can't afford a decent gaming machine will stick with those unappealing games and will purchase things from them.
It definitely isn't "bad for business." Mobile games are some of the most profitable and they don't take many resources to develop. Mobile games aren't at the point where you can consider then a replacement for console/pc gaming.
It doesn't hurt anything. It's just something for fans of the franchise to enjoy while on the go. (I personally really enjoy the zombies game they put out before)
People are overreacting just like they did with the Diablo: Immortal shit.
for competitive gaming I would say try go for 200 fps.. for pure fapping material go for low fps ultra graphics. really makes a huge difference on competitive games when you have higher fps though. (also a good hertz monitor)