Is to be denounced

"Yet to call for that very thing, as Labour’s Jeremy Corbyn does today, is to face the molten wrath of the rightwing press, the trade lobbyists and the Conservative party. To resist the ideological extreme that the private sector must always run our public services is to be denounced as an extremist ideologue." (The Guardian.)

Is "is" in To resist the ideological extreme that the private sector must always run our public services is to be denounced as an extremist ideologue a linking verb or a part of the catenative construction "is to be [denounced]" expressing the idea of destiny of being denounced as "an extremist ideologue"?