And since it is a game, someone can also just have fun playing it, too, and meet people along the way too as an added bonus.

If you have heard of K. Anders Ericsson or deliberate practice you’ll know this has limits. The fastest way to get great at anything when you’re already good is not play. It’s deliberate practice. You work at the edge of your ability, doing something you are just barely capable of doing, trying to get to competent. Once you’re competent you move on to the next frustrating thing that you can’t quite do reliably. It’s closer to mentally exhausting than fun.

That's the fastest way to grow, but to retain that growth it's also worthwhile to have some 'fun' with each new skill shortly after becoming competent at it and periodically (say, monthly at a minimum) thereafter. At least, that's how it is in my experience with shred guitar techniques. The higher level stuff gets rusty faster than the fundamentals

Would you be willing to spend 2 hrs per day on any type of game?

If you have the time, and it's fun, why not?

Many ordinary people spend more time every day watching TV.

Time alone is not enough to reach the top 5% or better in a game. You need to be focused and put a lot of effort into improving.

It's quite draining, and nothing like watching TV.

Oh, true. I was just reacting to the 2h-a-day.

I do tv watching equivalent at times when I tired for focused activities or when I also do something else on the side.

It is just not the same. You play chess at your mental prime-time basically, to challenge and tire the brain. You watch tv/youtube to get rest.

I usually use sleep to rest.

Another person, but no.