[jltsiren]

You are missing the point.

Free speech is also the freedom to change the rules. If something becomes popular in the marketplace for ideas, there is always a way of turning it into a law. The exact procedures and thresholds may vary, but the possibility always exists. Because laws and constitutions don't enforce themselves. People enforce them, and those people (or their replacements) may choose to enforce them in a different way.

You say that repealing laws should be easier than passing them. But maybe the opposite idea wins in the market. Then it will be easier to pass a new law than to repeal an existing law. Under free speech, all laws, constitutions, and rights are ultimately temporary opinions subject to the whims of the market.