Not just freedom to do so, which of course is presumed:
Can. 212 §1. Conscious of their own responsibility, the Christian
faithful are bound to follow with Christian obedience those things
which the sacred pastors, inasmuch as they represent Christ, declare
as teachers of the faith or establish as rulers of the Church.
Yes. Go on . . .
§2. The Christian faithful are free to make known to the pastors of
the Church their needs, especially spiritual ones, and their desires.
Yes, the freedom part . . .
§3. According to the knowledge, competence, and prestige which they
possess, they have the right and even at times the duty to manifest to
the sacred pastors their opinion on matters which pertain to the good
of the Church and to make their opinion known to the rest of the
Christian faithful, without prejudice to the integrity of faith and
morals, with reverence toward their pastors, and attentive to common
advantage and the dignity of persons.
Hence the dozens of Catholic blogs that question church leaders . . .
Blithe Spirit 