Earlier quoted context omitted.
It's not a slur, it's just distinguishing people between those that own property and those that don't. As such, it's offensive to large swathes of disadvantaged people.
I can't even begin to follow this line of thought. Is 'billionaire' offensive because it distinguishes those who own billions of dollars versus those who don't? How, by your logic, is 'property owner' not offensive?
I think you meant 'person of means'?