To Air one's opinions
To state opinions without having firmly based them
on proper data. To let them fly loose, like a caged bird.
an opinion means to suggest for the purpose of having it duly
tested. A conceited man airs his opinions, a discreet one
ventilates them, as corn when it is winnowed; and the chaff is
Source: Dictionary of Phrase and Fable, E. Cobham Brewer, 1894