Also I know it can be hard to get financing if the seller is hiding money on taxes and it looks like their not making much money.

@Jay Hinrichs has posted on that in the past.Many people like to try and hide their identity because of the spotlight effect which refers to how people often overestimate how much others notice (or care about) them, effectively inflating their own importance in society. 

If the tenant hides something or lies and I discover it later, that is grounds for termination.

Either you don't know why because you have your head in the sand and haven't paid attention to their communications or they are trying to hide things from you. 

Others deliberately hide their success so the exaggerators don't pester them!

It is a matter of time for Grocapitus to get fined or get shut down. or He may rebrand once more or try to hide behind someone else. he does not do the underwriting, just the power point. 

You need to get some perspective buddy, unless you are trying to hide something.

Many times they will claim it's wonderful and then try to hide their worst deals by only showing completed deals.

Hiding in a Trust is viewed as "hiding" which implies "deception". 

If they aren't charging a pre-disclosed & agreed upon Markup - they are probably hiding something to make money for their time.Good luck!