I don’t understand “collaborator” here.
Hungary openly fought on their side —the decision was made for the ENTIRE country.
It seems the author is imposing the WW2 history of Vichy France on Hungary.
The only prominent Hungarian collaborator I know of is George Soros, and that moniker can be imposed on him only insofar as his role vis-a-vis Jews in Hungary is concerned:
He betrayed them.
Besides which, Dr. Gorka was born in 1970, in England!
His parents weren't even old enough, during the Nazi takeover of Hungary, to be involved in WW II;though they were caught up in the Hungarian Revolution, in 1956, and his father was jailed, by the STINKING COMMIES from the USSR.