Am I transphobic for thinking that non-binary isn’t valid?

I agree with the binary spectrum that involves identifying as male or female but if it’s an other gender, I personally don’t agree with it. I have nothing against non-binary people and I would never discriminate them, I will even call them by their they/them pronouns but I still don’t agree that there are more than two genders. Am I transphobic?
Yes you are transphobic
No, there are only two genders but transgender is still valid
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Enbyphobia?
Am I transphobic for thinking that non-binary isn’t valid?
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