I would disagree that it is elitist - I think its about how you position yourself. I am the guy who could barely find time outside of school or uni because they had to work all week but I answer the hobbies questions by being very honest and saying I am limited to time because of the fact I worked 30+ hours a week alongside a full time LLB so I don't partake in sports or societies. However I would show how my part time job aligned to my interest in tech as I worked for a tech company and how it was quite a social job as I was in sales and working in London meant I spent my days talking to people of all different backgrounds and hearing some fantastic stories, I say how I would use the time commuting to read the news and listen to podcasts as I like to know what's going on in the world. IMO when law firms ask for your hobbies they aren't so bothered by what they are they are more thing to find out what motivates you.