Yes, it is. People play what they like, they play LoL because they like LoL. They play BRs because they like BRs and twitch streamers stream what people want to see, they don't play things because of an imaginary lack of choice but because they are hundreds of thousand viewers for those games.
You being judgmental of these genres is your problem, nobody cares.
And as many said, FF XIV is doing really well too...