I don't actually think that I want to use a mixer even if wasabi wallet seems to be a safe mixer (to not to be scamed).
May be the articles are true or may not be.
As per theymos, 100% anonymity isn't possible. Moreover, I have read a thread here where an user have showed breaking some of the mixing site.
One thing I don't get is how a user that broke some of the mixing sites can see if I transfer 0.1 coins from my wallet to a gambling site or an exchange and the sends 0.05 coins 2 (or another amount 3, 4, 5 .. X) times to my other wallet. Isn't that enough for him to lose his track on me?