Nope not a bit.
The guy I hunt with and I hooked up about 6 years ago, he was just 21 then, and I was a beginner, I have learned more from him than from anyone I have ever been in the woods with. Oh.. I am now 33, would make me 27 then I think.
Bottom line if the guide comes recommended and seems to know his / her business, I will hunt with them any time I have the $$ to pay for the service.

Just my uneducated opinion!
Terry