Whether it's in the Constitution or not in the Constitution is relevant, if you are trying to fight a case in law under that Constitution. But it doesn't say anything about whether it is a good thing or a not-so-good thing or a bad thing. A Constitution can never be the last word in deciding whether something is good or bad.

Freeedom of speech isn't a good thing because it's in any Constitution. A Constitution that doesn't include it is a bad Constitution. But in fact most countries with governments that attack freedom of speech in fact have bits in their Constitution guaranteeing such freedom.

A Constitution that guaranteed free health care for all would be a much better Constitution than one that doesn't, but you don't need it in a Constitution to bring it about. The important thing in any case is to do what is right.

Constitutions are just agreements between human beings, and when what human beings changes, it's time to think about changing the Constitution - as has been repeatedly done already in the USA, and will be done again, many times.