That's not exactly true. It's all over the the Russian media and he is presented as a real NATO official (yeah, part of usual Russian propaganda war, nevertheless that's how it is sold to the Russian population).Just trying to get some money for himself. No one sees him as any serious.
Gunter Felinger, Chairman of the NATO European Development Committee, called on the North Atlantic Alliance to strike at Serbia.
NATO called for the bombing of Belgrade again
Chairman of the NATO European Development Committee Gunter Felinger reacted to the increase in violence in northern Kosovo and called for “bombing Belgrade right now” as part of the new alliance intervention.
RGRU (here, at least they have 'NGO' in the opening paragraph, but not in the headline):
The head of the European NATO Enlargement Committee, Felinger, called for bombing Serbia
NATO called for bombing Serbia