Does IT attract the most liars/fakes?

I don’t think so, but it’s vastly harder in most IT roles to fake it till you make it as compared to many other careers. If you claim to be able to set up a network and there’s no functional network after, it’s pretty dang obvious you have no idea what you’re doing.

In IT it’s often just a matter of hours until it becomes clear that you’re an incompetent or a liar (or both). On the other hand, in other fields I’ve seen people coast sometimes years with little to no relevant knowledge or skills. This is just not possible in my field in most places because you must almost-immediately create or troubleshoot things that actually function in the real world.

It’s usually clear to me within five minutes of working with someone in IT if they know their stuff or not. I don’t think that’s true in a lot of other roles, particularly ones that rely on more soft skills and gladhanding.