One calls it censorship, someone else calls it protection of democracy and freedoms, because freedom of speech is not absolute and not of higher priority than other human rights. Human rights are always in conflict with each other: today USA is deciding to violate right of property for Russian oligarchs because rights of Ukrainian citizen are violated. Right for free movement was restricted during Covid pandemic for…
You might be ok with making speech restrictions.. but are you ok with a hardline opposition candidate doing the same?
2. Governments change
Even a government that starts using a power - say restricting access to bank accounts - for something good like stopping actual terrorism or money laundering can decide to start using it against political movements they don't care for.
3. Governments grow
Governments only grow in power. They get bigger. They use more powers. Even some of the hardcore censor states started with more narrow objectives. China started with objectives to stop false information and external propaganda - now they use that power to suppress victims talking about sexual assault by party members.
Fundamentally I do not trust any government to have that power. It will always be abused, and we must always resist it. Australia is an excellent example of a liberal democracy using safetyism to quickly run towards authoritarianism.