I don't think you know me or how long I play when I have the time to finish a game. I have finished so many titles on here made by devs for PC that are short af and it's not even funny, and it gets worse with the game "jams". Short attention spans what? All I know is, what I ask for is legit.
And there's plenty ways to port PC to mobile, Capcom recently with RE4 on Apple devices kind of just proved it, and if you know your Apple hardware and android... that has some hidden ties and aren't all that different. Go figure. The answer is in plain sight, they can.