Are they only suspect when they don't fit your narrative? There is an ample conservative Latino base and the original post you quoted aged like milk.Yes.
Also, polling has been suspect. Crosstabs this cycle have been suggesting the Latino vote is tied and that convicted felon Trump will pull 25% of the black vote. Vote Latino just release a poll that had Biden +20 among Latinx voters (2020 result Biden +28). Republicans have gotten no more than 13% of black vote nationally since 1992. The polls are telling us convicted felon Trump is historically popular among minorities, despite his last two elections saying otherwise. Yeah.. about that.