That is precisely the opposite of objective. Personal thoughts, feelings and opinions are subjective by definition. 2+2=4 is objective. "You need to put more cheese on that pizza" is subjective.
"We don't have enough test coverage to ensure that we're generating RFC-compliant output" is objective. That's not a personal though, feeling, or opinion. If you wish, you may generalize that to "we don't have enough tests to catch an error that made it into the shipped product".
That would only be objective if it were possible to have enough test coverage to ensure that. But that is not possible. So it is purely a subjective question of how much test coverage person A thinks is "good enough".
That is precisely the opposite of objective. Personal thoughts, feelings and opinions are subjective by definition. 2+2=4 is objective. "You need to put more cheese on that pizza" is subjective.