In a lot of ways I'm very similar to Jack - I'm the same age, took my A Levels at the same time, went to uni at the same time, graduated at the same time. I come from a middle-class family and went to an all-girls grammar school and while I'm not 1st gen my mum only went to university because it was free to do nursing at the time. That's the reason I used to watch him, I thought watching people the same age as me navigate the same things in life was pretty cool, but I find him completely insufferable these days. Studytubers all have such a weird and unhealthy attitude to success and benefit so much from their upbringings and capitalism but none of them ever want to actually admit it. The amount of value they all place on Russell Group universities is ridiculous, when I went to MMU and had a great time and great education there and am returning in September because of how much I loved it. I just think their attitudes stink a lot of the time. They go on about inequality and disparity and voting Labour on their socials but it's entirely performative because they're the ones who benefit from the crappy system we live in the most. Especially Jack, with his pushing that he's 1st gen, and how quirky he is for drinking Strongbow out of a mug, it just reminds me of all the freshers in Manchester who pretend they're lower class when they're really not. Goes back to the whole classy when you're rich but trashy when you're poor thing.
I think studytubers in general also seriously romanticise burning yourself out and pulling all-nighters and just promote a really unhealthy lifestyle at university. It doesn't need to be like that and they need to stop pushing this "if you're not spending 24 hours in the library you're not successful" crap.