If people are happy with prioritizing sex above all else, then yes, it's their choice and it may very well be asinine to tell them otherwise, but if so; the same thing could be said about any choice of lifestyle. Also, she was only stating her opinion, so I think you might have misunderstood her a little bit there.
Here's my two cents: A relationship needs money to survive (I'm not saying a lot), just like how your own life needs it. A job and a solid ground to stand on should be top priority - not sex. Sex can come second and then anything else that you want, but it simply should not be the first.
Unless you're in the porn industry, then well.. It's a different story.