Mcmahons have out in time to be considered talent as much as any wrestler in the back. Vince has bled buckets for the company, Shane put his body thru hell, Stephanie has bumped and been hit by men, and trips is trips. It isn't like they are Dixie Carter, Eric Bischoff, or Paul Heyman. They put the work in physically in that ring as well time and time again
You seem to be making an odd point like you are saying that non-talent have more value than a great manager like Heyman. Carter hardly ever appears on TV except in certain storylines which it would make sense for the owner to be there, and Bischoff does have a good history from WCW/WWE of being a good personality.
Just think fans are bored of the Mcmahons as onscreen characters no matter how long its been.