I should note Android runs with a Linux kernel. It has been estimated that games like Pokemon Go have made over $1 billion on revenue from Android devices - larger than its revenue from iOS. Candy Crush Saga, Clash of Clans, Dragon Ball Z etc. do well on Android as well. So the "would totally skip Linux" advice is not heeded by every company for every platform.
Linux in the thread specifically refers to the Linux Desktop, and even more specifically to the only two supported distros: Ubuntu and Mint. Citing the success of an Android game does not in any way invalidate the advice.