Why was Paris Hilton's IVF announcement criticized?

Paris Hilton and her boyfriend Carter Reum had IVF with Kim Kardashian’s fertility doctor and talking to The Trend Reporter host Mara Schiavocampo while on her podcast, she said:

“We have been doing the IVF so I can pick twins if I like. Kim is actually the one who told me about that—I didn’t know anything about it. I am happy she told me that advice and introduced me to her doctor.”

Hilton then added: “I really want twins who are a boy and a girl. So, this is the only way to 100% get that.”

I guess that's what triggered people because many women found it offensive that someone wants to use IVF as a luxury to have kids of a preferred gender.

However, I believe IVF was not as much a choice for Hilton and she probably just chose the wrong words. She'd frozen her eggs a few years ago (also on the recommendation of Kim K) and the only way to use those was IVF now.