Some of the most popular games have been PUBG, Fortnite, Rainbow Six, Roblox… I don’t play on mobile myself but you can’t deny this new reality.
Anyways, statistics aside he's right. Mobile games aren't the same thing as console/PC games. They are, almost without exception, thinly veiled monetization machines designed to be almost fun but not actually fun, just so you will pay money. They are literally designed to be less fun as a business strategy. There are games on real gaming platforms which are just as exploitative and poorly designed, but they are the exception. With mobile games they are the rule.
Given that the nature of the markets is so wildly different, it's perfectly reasonably to say "no, these are different things".
This thread started because someone though Steam stands as the universal entrypoint to gaming in general, which is absolutely far from the truth.
For those with high-resolution screens and 144fps the equipment is not affordable to most but not necessary.
But an already existing phone is cheaper for sure