Certainly it is the skeptical position to set up "absolute certainty" as a knowingly impossible target and thereby argue that nothing can be known for sure through the senses, and thereby assert that only through something equivalent to "ideal forms" can be held to be true.
Of course, this is not what I was saying, right?
Yet, what is the problem with the phrase "a high degree of confidence"? Do you think this is radical skepticism in the sense of the Hellenistic era of Greece, or in the modern sense of the word scepticism? Surely Epicurus would be amenable to the modern concept of sceptical reasoning since it would be the basis of rejecting ideal forms. Frankly, I have no problem with either usage of the word scepticism in the modern era in which we find ourselves. Neither one to me rules out believing anything with merely a high degree of confidence rather than absolute certainty.