I watched this very long documentary having no real interest or knowledge (or interest to gain knowledge of) Super Mario Brothers, which came out after I was done playing video games (I am glad Colecovision was mentioned here, which I grew up with)...
But I gave it a try as it started playing directly after a RoboCop documentary, and they did a good job showing what's involved in the games and how to play the games fast...
But the best aspect is how to figure out the glitches of each game to save time... that alone could have been an hour-long documentary: on mistakes in video games that have become more iconic than the actual games...
Anyhow, all the young adults centered here wound up making money streaming, and it seems like the whole purpose was to say, hey, you can make bundles of money by sitting around playing video games... but believe me, that's extremely rare, like winning the lottery...
The four or five different gamers shown (no girls, by the way) are somewhat interesting, and they're very skilled, but what this doc lacks is what made A Fistful of Quarters so great, and that's a worthy villain...
That is, an egotistical "star" who is the opposite of the humble and very affable people here, making each story feel the same, overall lacking tension in when these people compete against each other...
Plus there's too much time centered on each person, so that when former interviewees turn up again, you've almost forgotten about them...
Overall, you're not really rooting for anyone since everyone's so friendly... But it's an intriguing glimpse into a niche world.