Earlier quoted context omitted.
I agree with your disagreement. After playing games for roughly over thirty years, I can say without a doubt there are a greater variety of games available today than most of my years of my game playing combined. I would say the more likely issue is discovery.
What I don't understand is that the author IS a gamer. And a designer. She probably knows a lot about games. She can help her friends sift throught the sea of games and find some that appeal to them.
Of course, the piece also reads as an advertisement for their new gaming studio the OP is building, so I think that figured into the narrative as well.