Uh what?
Why would Sol be confused about that? This isn't some deep lore reference. It's an assertion of property of the helmet, that being that it prevents Jedi from being able to sense what people are thinking (which, frankly, seems fairly limited anyway).
The Jedi absolutely seemed confused by their lightsabers going out, certainly before it happened for about the fourth or fifth time. But they're trained fighters, so confusion isn't just standing around goggling like it might be with some people, it's more momentary.