Why do people think that computer science gives them the authority to pontificate on any topic of their choosing? Clearly the author has no idea what they are talking about, as by their own admission, "I’ve only taken 1 metaphysics class" and has a "suspicion" about the entire field. And even considering the question of "is all philosophy simply word confusion" would get you laughed out of the room by any philosophy grad student. You wouldn't like it if some philosophy student wrote blog posts about how P=NP without having the slightest knowledge of the field, so afford other areas of study the same respect.