“I think we should …” is not an opinion, it is a factual statement about an opinion ("we should…) which you have, and thus it’s either true or false depending on whether you have that opinion (“it’s true that you think …”) or not (“it’s not true that you think”).
An opinion might be right or wrong if it’s an opinion you should or should not have, some of course are neither because not everything in life is just yes or no. Opinions about facts that are false or facts that are true are easily categorized as wrong and right opinions.
“75+25=110” is an example of a true statement and thus a right opinion to have. “We should change 75+25 to be 100” is a false statement and thus an opinion that you shouldn’t have. “Pirandello is better than D’Annunzio” is neither true nor false, but you can still think that and hold it as an opinion, like I do, “I think Pirandello …” is a true statement about my opinion.
In my opinion you are entitled to hold an opinion regardless whether it’s true or wrong or neither.
My bad, I meant the 75+35=100 thing, which is a common mistake people make when doing brain math. Just imagine I said 35 in the thread.
Back to the topic. “Who decides…” I clearly said some opinions are neither right nor wrong, if something is subjective, it by definition is neither right nor wrong. “No law to force/prohibit” I also specifically said you are entitled to have wrong opinions, so we can ignore the entire “forcing/prohibiting” conundrum.
Next paragraph. “… These are facts that can be true or wrong” exactly, and when I say “in my opinion <fact> is true” this is also a fact (a true one) in which I say “<fact> is true” is my opinion, but if “<fact>” is actually false, this is a wrong opinion that I shouldn’t have.
An opinion is a fact you believe is true. But some facts are false and it’s wrong to believe they are true. “Your opinion is wrong” does not mean that “it’s false that you have that opinion”. Not every opinion can be just wrong or right, as I said multiple times.