Is it that only one major tournament contested by Europeans (euro or world cup) has been won by an international team without a manager who is a citizen of that country? (Greece, euros)
How would you feel if the 1966 would cup had been won being led by, let's say, a Scot. Think you'd ever have heard the last of it?
International football is entirely predicated on the criteria of national availability. I personally would extend that to staff. If the argument is that nationality has no place in the competition, then the whole thing is in a mess.
I don't think that is hat stand, and it has nothing to do with paranoia. Particularly when we are living in the very age when our local football clubs are being wrestled from the communities that built them.
...i don't think international football support, and the pride derived from that, is well served by meekly supporting the bunch of foreigners foisted upon you.
YMMV.