Um, not unless he was re-bushed. 
(reaching for mind bleach to remove any trace of this line of thought)
Got to hand it to Barney, he is a super intelligent whiz kid.
He knew he could not pass for straight so as a young man came right out and had nothing to hide.
He watched as the politicians that stood for family values came into the exclusive gay clubs in DC, and took names. He knew who on the police force and in the DA office were gay friendly and who had gay kids and relatives.
Not hard to do back in his day to pinpoint the governes of 50 states and the Senate and Congressmen with gay family's or themselves gay.
As an up and comer he knew everyone that had power that would pay him off in some way to keep his mouth shut. His friends even lead him into the highest reaches of the Pentegon to gay chiefs of staff.
By just taking names and going into the underworld of sordid gay life for 20 + years paid off when he ran into trouble for his doings and others in his house hold.
Barney is today one of the most feared men in DC. and else where.
He is above reproach as those that point a finger at him may receive a back lash that destroys their carears or destroys family members marriages and the future of their kids.
No problem with fear of someone offing him, he most likely has copy's of his life experiences, dates and times held around the country by 100's of friend all too willing to place these in the hands of the public. Best to keep him alive and do as he asks then face family disgrace.
In my openion Barney is an evil little twit that used his intelligence to turn his life into one hell of a glory hole for fame and fortune.
But he is not the first or the last to do so. The ones we have to watch are the people that hide their true identity from family and the public and catch us unguarded, confused and in shock.
I can think of a few sociopaths that we have lived around that have done more harm then Barney, at least for him it is the money and sex, not leaving dead body's all over the place.----Or has he?