I'm not saying that these things are true 100% of the time. For example, I'm a silver star and I display it, and I think I'm good.
I do think that it's helpful to look at these things to help you make your decision. I mean.. just because someone's 6-tabling doesn't mean that they're not raising A9o UTG, but if someone is 6-tabling, I'm going to severely discount that in their range and if they're 1-tabling and displaying silver star, I'm going to assume it's like 70% in their range.
As a poker player, you have to be comfortable with the idea of imperfect information. Just like when you make a river call because you think you're good 30% of the time or whatever (even though in reality your opponent only has one hand and you're either good or you're not), you have to learn to make decisions because your opponent has x% chance of being a fish (even though in reality your opponent is one player, not a mix of many players).