Do you want me to post the definition of "subjective" for you? When you ask me what I think...you're by definition asking for my subjective opinion.
If that is the case then anytime anyone asks you anything, whether they are asking you what 2 and 2 is or what your favorite meal is, they are by definition asking you for your subjective opinion.
Obviously you're wrong. For the one who asks you what 2 and 2 is, is asking you for something for which there is only one objectively true answer.
It's absurd to think that just because you are asked a question that therefore that question is not made true by an independent feature of reality, but by whatever your opinion is.
Obviously if someone asks you what the capital of Idaho is, or who the 30th president of the United States was, you cannot say, "well since you are asking me, there is no true answer to the question."
Likewise, simply stating that I am asking you your subjective opinion about a certain act being good or bad, right or wrong, begs the question that such an act being bad or good is determined by one's subjective preference.
I asked you if chopping an atheist into pieces because he is an atheist was objectively wrong.
I am not asking you for your opinion or what you feel. I am asking you if there is a feature of reality that exists independently of human opinion and preference that makes the proposition, "chopping atheists into pieces with a machete because they are atheists is wrong." objectively true.
I can prove it to you objectively. Then I would go about doing just that...the very thing that you can't seem to do with objective morals.
Once again the confusion is evident. 2 and 2 being four is not made objectively true by your being able to show it is true. It is made true because the proposition's truth bearer refers to an independently existing feature of reality not dependent on human opinion or perception.
The proposition 2 and 2 is 4 would be true even if no one knew how to add the two numbers together.