If the author was trying to make a point (as many sci-fi authors were), it's totally reasonable to call out someone who misses the point.

Like the people calling Starship Troopers fascist. Or even funnier, the people calling Heinlein a fascist for writing Starship Troopers, which just proves they haven't read any of the rest of his work.

It depends on how good the point is, doesn't it? I am more aiming at the "Torment Nexus" type of argument which essentially assumes that writers know technology better than technologists and the mere existence of scifi dystopia that somebody thought up is a good reason ipso facto to not do something.