I'm entitled to my opinionwikipedia
I'm entitled to my opinion or I have a right to my opinion is a logical fallacy in which a person discredits any opposition by claiming that they are entitled to their opinion.
one is entitled to their opinions

Cliché

clichéclichéscliche
The statement exemplifies a red herring or thought-terminating cliché.

Opinion

opinionopinionsscientific opinion
A given opinion may deal with subjective matters in which there is no conclusive finding, or it may deal with facts which are sought to be disputed by the logical fallacy that one is entitled to their opinions.

Formal fallacy

logical fallacynon sequiturformal fallacy
I'm entitled to my opinion or I have a right to my opinion is a logical fallacy in which a person discredits any opposition by claiming that they are entitled to their opinion.

Red herring

red herringred herringsred-herring
The statement exemplifies a red herring or thought-terminating cliché.

Theory of justification

justificationwarrantjustified
To assert the existence of the right is a failure to assert any justification for the opinion.

Patrick Stokes (philosopher)

Patrick Stokes
Philosopher Patrick Stokes has described the expression as problematic because it is often used to defend factually indefensible positions or to "[imply] an equal right to be heard on a matter in which only one of the two parties has the relevant expertise".