I think it's necessary in the context of a stable global hegemon, because capitalism is so organized and centralized under a single imperial power. We have to identify the primary contradiction and struggle against it, which can make for strange bedfellows.
In previous eras it was possible for revolutionaries to play the imperial powers off against each other, like the Haitians playing the British off against the French and the Russian revolutionaries playing the Germans off against the Tsar. Today, the West is unified and so playing them off against each other isn't going to work. This limits revolutionary possibilities strictly within nationalism, which means collaboration with the national bourgeois forces against imperialism.
That means appeasing bourgeois patriots in national liberation struggles and in the ongoing struggle against imperial hegemony.
For now.




