If you have doubts, visit the iOS thread in community. In the past year, we've had some amazing stuff. Monument Valley, FRAMED, Device 6, Threes! And 80 Days all quickly come to mind. If you actually do allow for F2P, there are some genuinely fun titles like Terra Battle & Puzzles and Dragons.
Besides original new stuff, we have worthwhile ports of games like Papers, Please, FTL, The Banner Saga, Hearthstone, Thomas was Alone and XCOM.
Well, I wouldn't like to be seen as just a white knight. What I find interesting here is that the people who don't like mobile gaming seem to listen to other's points. It would be a shame if all of this turned into a us vs them.
As for me, while having been an advocate for mobile gaming some years ago, the situation these days has led me to take a much colder stance.
Ratio
YMMV but I think the ratio of abysmal shit vs good games is incredibly bad on mobile. It's not an important factor, as good games are good games and that's all that count, but I have grown tired of this deluge of shit every week.
Again, a lot of people will think it's a meaningless detail.
Monetization
As long as the prevailing mindset on mobile is free or get out, I have a hard time looking at mobile gaming seriously. Solid games need money, and the more you cut back on it the more you risk drowning in freemium clickers.
Yeah, my point is not exactly novel. There is surely more I could say against the thing but as I type this I'm growing tired of the been there done that myself so I will spare you.
YES, there are great mobile games. Boardgames, strategy games, the resurgence of visual novel type games, yes. But it could be so much more. There is still a lack of traditional game genre (RPG, PnC etc...) and the monetization of it all has still not matured enough.
I wouldn't mind saying "all hail our mobile overlord" so to speak. But for the time being the situation seems too precarious to me.
There is a huge potential, definitely. There is also a huge potential to see all of it turning to a big waste of promises.