You have to be careful about deciding if something like what you read is true and gospel or maybe has only a little truth to it. I don't know who wrote what you read but I'd like to point out to you...
1. I dress like I do partly because of my age and I don't like loose, baggy clothes that shout some sports team or guy who makes megabucks off people who think wearing something special makes them special. Also, I play a lot of golf so a lot things I wear in a casino I also wear on the golf course. If I'm in jeans, my baseball cap isn't backwards.
Now, since I'm a very aggressive tight player, won't my play soon dispel any thoughts of me being loose because of the way I'm dressed?
2. I'm quiet because socializing is not my main interest at a card table. If someone starts a conversation I'm civil and I'll sometimes join in on a joke. I never talk trash, and smack mouth won't put me on tilt. You can beat me with your play, never with your mouth.
Again, if I'm being meek/timid (in your opinion) and you're classifying me as a weak player, won't my style of play change your mind?
3 & 4, I agree with. As does anyone with any experience.
Just be careful when you're classifying players. Caro's book is loaded with information that can be used against you. It's "I know you know I know so I'm gonna..." Tells
are extremely important - if they are actually a tell and not a false signal.
It takes a few orbits to be able to classify a player. And smart players know this. That's why they mix up their style. You see a good player bet a certain pattern twice, he wins with trips. Later you see him bet the same pattern again and you go to the river against him with your straight. Then he shows you his boat. That's why they're called smart.