I think you might just be misreading the original post. It could be rephrased as: “all developers who dislike TypeScript and Tailwind either haven’t used them or aren’t skilled with them.” If you could say that about anything, it would mean that developers never dislike tools with which they are skilled. I’m saying that’s clearly not the case.
So…I’m not sure what that implies about the statement? “Someone probably believes X about Y” isn’t just true for any Y, it’s true for any X.