Never really liked Wittgenstein. He's often misunderstood by wannabe logicians (people that don't actually want to do, you know, proofs) and (imo) didn't really contribute that much to logic or philosophy of language. Much more important logicians are brushed over (Łukasiewicz, for one; Gödel, for another) when Wittgenstein is taught for entire semesters.

Arguing that he "invented" the emoji when we have entire civilizations that used pictorial forms of communication (uh, ancient Egypt?) seems just straight-up wrong.