It's a ridiculous comparison, given in response to the ridiculous assertion that homelessness is a privilege.

At the end of the day, at some point someone says "these working conditions are too shitty and I'd rather go look for something else". That person sets a lower bound on working conditions for people who aren't able to leave so easily. Saying "how dare you not work for a pittance with all the other poor buggers trapped on a wage where saving is impossible" is blind; calling it privilege is wilful stupidity.