No less a jurist than Antonin Scalia (one of the most conservative and intellectually formidable Supreme Court justices, whatever your opinion of his positions) thought that the US Constitution was too hard to amend:
"Scalia said fewer than 2 percent of the population could prevent enactment of a constitutional amendment. “It ought to be hard, but not that hard" https://www.abajournal.com/news/article/how_scalia_and_ginsb...
The bizarre circus of Supreme Court nominees coyly pretending to be apolitical in a plainly partisan nomination process is another indicator that there's something wrong.