Most “fallacies” are informal and rhetorical and not direct logical fallacies. Almost no one will say that X is not perfect, therefore it can be discarded. But

Most “fallacies” are informal and rhetorical and not direct logical fallacies. Almost no one will say that X is not perfect, therefore it can be discarded. But plenty will focus their argumentation on how X is not perfect and leave the implication on the table that X is not worth bothering with.