That's a ridiculous statement, many people do. I personally wouldn't, sure, it's an expensive city to live in (I have lived there), but €50k is I think a little above the median salary there. You could easily survive on half that if you needed to, I know many people who do. Not everyone lives in the privileged world of tech salaries, think through all the jobs people do in Paris and think if they're all being paid 50k or more..
Actually, you do, and rather comfortably. (Sources: me, 22k/year after taxes. Or my parents who raised two children in a big flat in paris, both 35k/year)
