Is that true?

It's true that is what he claimed. I could link the video. Is what he claimed true? Maybe. Depends where he is. A quick search showed a very wide range depending on whether it was an RN or an "ordinary" nurse, and where they are geographically. He didn't specify in his reaction, so I don't know the details he was talking about. And NP is another category again (as is CNA, on the lower end).

A college grad isn't getting $90K per annum. As you say, they're starting at $64K or lower (I found a quote of $50K, but I won't quibble). As for college, it greatly depends on the program. A quick check showed me ranges from about $48K for fours years to more than $80K. NPs go to grad school, so that's more again (up to $200K, depending on how far they go, though the "average" I saw was $100K+).

Just speculating, but perhaps they have to cover their own MP insurance, which can be a big chunk of salary for someone making "only" $70K per year. (Which then gets into tort reform...how much is a leg worth (or newborn, or husband, or whatever) vs how reasonable is it to hold an individual responsible for something that may have been unavoidable anyway.)