be a matter of opinionused to say that people have different opinions about something, especially when you yourself have a negative opinion
[TahlilGaran] Dictionary of Contemporary English ▲
matter of opinion n. phr. Something that may or may not be true; something that people do not all agree on.
Whether or not he was a good general is a matter of opinion. Compare: MATTER OF FACT.
[TahlilGaran] English Idioms Dictionary ▲