It is not just my opinion that the essentialist view of 'race' is fundamentally racist.That is your personal opinion. It is not fact
False premise.
It is actually pretty low to state somebody is 'fundamentally and inherently racist', simply based on opinion with no proof.
I think you need to apologise.
If someone chooses to promote that view, then they are also fundamentally racist.
If someone ends up promoting that essentialist view of race out of tribal loyalty, rather than understanding what they are ascribing to, then that person has followed someone up the proverbial path out of blind faith.