Criticism, particularly constructive criticism, is most definitely NOT “hate speech”, so long as the critic avoids any ad hominem attacks.
When it becomes personal and does not address the failures or lapses of the performance of the person subject to the criticism, then it certainly becomes something else.
Even so, damning a person’s performance by faint praise is still a legitimate form of criticism. again avoiding getting into direct scratching and biting.
I forgot to add “sarc” to my post. My bad.