I love people who will preach against something and then go ahead and do it themselves. It's just such a perverse reflection of a legitimate values system and the people who do it are completely unaware. Sometimes you just want to laugh, but you have to hold your tongue because if you point out the flaw these people will violently deny it. Who wants to deal with that fight?

Regardless, if someone claims to be passionate about something, or that a certain idea is central to their being, it shouldn't be negotiable. If you say you'll never, ever do something then you don't. And if you criticize someone else for something you don't go ahead and do the same exact thing later.

If you aren't willing to lead by example don't preach the words. It's that simple.