Gamers seem to have this elitist attitude that the only good games are ones with photorealistic graphics, running on high-end hardware, with huge production values. The gaming industry shouldn't be so one-sided and exclusive. Mobile gaming has helped expand gaming to millions of people who would never buy a console or gaming PC. There are billions of people in the world, most of them have cellphones, that's a huge market to cater to. Mobile games give them a form of quick entertainment that they can enjoy in short bursts. This does not take away from your enjoyment of AAA games.
Then there's the ridiculous claim that games should only be made for one demographic, adult men. Gamers look down upon women, children, or the elderly who might also enjoy playing games. This form of sexism is extremely prejudice and does nothing to promote diversity. The gaming industry is much bigger than you think, and if it's to be taken seriously like movies and music, it should cater to all different types of people, regardless of age, gender, or demographic.
In short, this whole "casual vs core gamer" facade needs to stop. It does nothing but spawn toxicity within the gaming community. This isn't an "us vs them" war, gaming should be accessible for everyone. People like to play different types of games, whether they're on consoles, PC, or mobile devices. We should be happy that gaming has finally become accessible for everyone, it's no longer considered a nerdy hobby.