I hear this parroted a lot, and it may have once been that the studio was the domain of the condenser microphone, but that has certainly changed over the last decade or so.
I routinely hear people suggesting that you "need" a dynamic vocal mic for live use, or that you should "stay away" from condensers for other live uses, of course with the only regular exception being cymbals or "percussion". The reality is, condensers are becoming very prevalent in the live setting. It is not uncommon for me to mix shows with the only dynamic mic on stage being on a bass drum.
It used to be that budget kept folks from trying condensers on different things live, but that certainly isn't the case anymore. Many companies are offering exceptional value mics for on stage use.
Yes, there are many circumstances where the dynamic mics will still be king on stage. I just want everyone to stop ruling out their condenser buddies without trying them out first. It can really be an ear opener.