Just because they may not say "Razor Only" does not mean the outlets are not 120V. I just checked the specifications on several websites, and they all confirm it.OK, that must be the best proof you have of such. So I guess the truth is no, there is no such restriction on the Viewliner outlets. And your claim of such on every outlet, is therefore wrong.
I found some images, and you can see there's some writing under the outlet, but they aren't clear enough to read. It may say "120 volts"; it may not. The fact remains, they are 120 volt outlets, and you really shouldn't use a hair dryer.
For what it's worth, I didn't use my flat iron on the train, but I did check it when I got to the hotel. It's pretty high, which is probably why it heats up so quickly. So, I'm glad I listened to everyone when I posted the thread a couple days ago.