“too difficult”
And as important, too unpopular. Where there is broad consensus, the Constitution has been amended several times. When there isn’t a broad consensus, but the Ruling Class thinks their morality or their cause de jour should be imposed on everyone else without having to submit them to the legislative process, then the courts are supposed to amend the Constitution for them. That goes from Dred Scot to Roe to Chevron.
The “Equal Rights Amendment “ was a good example of how the process worked.