I say yes, for the reason given in the comments in this linked post (comment with respect to the First Amendment):
(1) Truth exists. The pursuit of truth is important, even fundamental.I think that logic can be extrapolated with respect to all most all government.
(2) Man is fallen.
(3) Governments are made up of men. Therefore, governments are fallen. And governments are particularly susceptible to error because of the corrupting influence of power.
(4) If government, which holds coercive and censorial power, is allowed to regulate the search for truth (ie, speech), it will do so in a corrupt manner.
(5) Thus, to best preserve the search for truth in a fallen world, government's ability to regulate speech must be very limited.