Yes, what you read is true. Even though there were many attempts in making unofficial games similar to Counter-Strike this method is for the original, official competitive title to work on your Android device just like if it was on PC (except for touch controls on screen).
Meet Alibek Omarov, one of the game’s fans who single-handedly remade the game to work directly on mobile devices using files from the official Steam release, allowing players to play on official servers without any troubles.
You don’t have to use touch controls of course, as there’re several Gamepad solutions available on Android that would work with the game. Anyway, hop into this link for directions and step by step guide to install the game.