Epochism

I call this epochism because it exalts one's own epoch to the contempt of other epochs. Epochism is a kind of unwisdom. Its opposite is a sense of tradition, an openness to the values that guided the lives of those before us.

Source: wiktionary

While it is generally admitted that Leonardo was hugely gifted, the modern tendency to arrogant 'epochism' seeks to undermine his achievements. After all, when he was in his prime, even the technique of printing was a novelty.

Source: wiktionary