I personally wouldn't be too quick to believe "the word", but if this is the case i think it is insulting to twin parents IVF or otherwise and IVF couples.
I am proud to say my twins are IVF because i went through a lot to get them, however it is frustrating when people comment negatively regarding IVF twins. Just as i would imagine any woman feels when questioned how her children were created, people and the media obviously feel like they have the right to ask the question with multiples when they wouldn't think twice about most singleton pregnancies.