I think this video showcases an interesting aspect of gaming that I never really thought about before. In their case, they play more games for a shorter amount of time vs spending a large portion of their time in few games.
Personally I'm on the side of spending more of my time in a select number of games. By far I have put no less then 3000-4000 hours in Minecraft. Logged by Steam, I got 1300+ hours in both GTA V and American Truck Simulator
More recently I've been really into Rocket League and Trackmania. These games are notable because I am constantly working to improve and get better at the game. As much replay-ability as much I find enjoyment in succeeding.
From time to time though, I do really enjoy getting into shorter, more story based games. Great examples being Portal 2, Road96, and Firewatch. What kind of gamer are you?
While I'm no completionist, it takes me a LONG time for me to finish games. Whether it be because I bounce between multiple games (Street Fighter 6 and Tears of the Kingdom currently), I do nearly everything in a game, or I set a stupid challenge for myself. I like to kneecap myself for no discernible reason in video games and TTRPGs. I'm attempting a 4 (but might be 3 soon) heart run in Tears of the Kingdom on my first run through. Why? Shrug