Yup I completely agree. I'm 21, and have grown up with what I'm guessing is a similar level of privilege to Ruby. In fact, I see a lot of Ruby in my older brother (who's 25). He has absolutely no comprehension of just how badly people are being affected by the pandemic in general, and especially the new restrictions. He's led a really sheltered life, and struggled massively to get a job after uni because he just assumed that having gone to Oxford, people would be lining up to employ him. I've always had a much more realistic view of the world, and far more self awareness regarding my position, but I have to say I've learnt a lot from seeing his attitude towards the world when it's come to forming my own.
One thing that baffles me with Ruby is that, for me, reading has always been a fantastic way of learning more about the world outside of the middle class Surrey bubble. It gives me access to people, places, backgrounds, upbringings etc that are so different to my own, and I've found it a really valuable way to understand just how lucky I am to have been born as I was, as well as to learn about (though never truly understand) experiences that are way beyond my own lived experience. It seems very strange that somebody like Ruby, who is a self proclaimed bookworm, and lit student, hasn't managed to use reading as a way of going outside of her comfort zone of middle class English life. Also, can anybody think of a friend of Ruby who isn't white, middle class and English? My uni takes a lot of international students, so I've been able to meet people from loads of places I don't know much about (though not especially diverse socio-economic backgrounds unfortunately...). I wonder whether Ruby has made the most of uni life when it comes to meeting people from different backgrounds to her own.