I got into this show in the 2nd half of 2020 when I was trying to look for Hindi-language media to complement what I was learning through textbooks and a variety of methods. I had seen memes of this show beforehand but no actual episodes; I decided to click on one just for fun and I was instantly hooked.
For like the entire summer that year, I was watching multiple episodes a day, laughing hysterically, and having a great time. Most of the episodes have English subtitles, so I tended to read those more but as I got better at Hindi I was able to turn them off, understand the characters and this way get listening practice. Even though they're all voiced by the same guy, each of the main characters is supposedly from like a different part of India, which is good for tuning your ears to different local accents/varieties of the language.
Unfortunately, that's where the utility kind of stops. For native Hindi speakers, this show doesn't really teach anything and is arguably a waste of time. The characters spend each episode doing a bunch of dumb stuff and while some may find it entertaining, it doesn't really teach any life lessons, skills or stuff like reading and math or science. For foreign children, I would say it's actually something to *avoid* - the English/French/Spanish subtitles have atrocious grammar and they're very-obviously Google Translated. Watching too much of this could disrupt their language ability.
So, I would say, if you're looking to practice'learn Hindi then you can check this out; otherwise, especially if you're a young non-Indian kid, then stay away. If you're an edgy teen who likes it for the memes, go do something useful.