I have found that many jws are not so obedient to the WTS and hide it from others, even elders. They feel if they don't get caught by men, nothing will happen to them.
That is certainly very common. I think it is why WT had to "allow" minor gambling (LOTS of JWs were buying Lotto tix) and going to the casino boats. Families who are "in the know" about how JCs work (elders and their wives/families) are often able to strategize their statements/confessions and avoid The Axe. Those that do not know how to play their game, go in unknowing and get kicked out while three assholes feel like bigshots and feel vindicated in ruining their lives.