Only in academia would faculty feel entitled to freely criticize their employer while expecting their employer to turn a blind eye. In any other field you would be canned on the spot for doing something like this.
There are principles at play here that don't exist in other employment situations; for instance, academic employees have this thing called "academic freedom" which, for decades, has meant that "[c]ollege and university teachers are citizens, members of a learned profession, and officers of an educational institution. When they speak or write as citizens, they should be free from institutional censorship or discipline..." and that "a faculty member’s expression of opinion as a citizen cannot constitute grounds for dismissal unless it clearly demonstrates the faculty member’s unfitness for his or her position. Extramural utterances rarely bear upon the faculty member’s fitness for the position."