My opinion as based on the definitions of opinion and empirical truth.
According to Merriam Webster: Opinion (noun) — a view or judgment formed about something, not necessarily based on fact or knowledge. Empirical Truth: exact conformity as learned by observation or experiment between judgement and propositions and externally existent things in their actual status and relations, called also actual truth, contingent truth.
Based on the empirical truth of the aforementioned definitions, my opinion of the definition of former would be more factually based on the definition of the latter.
In other words, everyone may be entitled to their opinion. But everyone would be better served basing those opinions on what you know. Rather than just what you think.