According to WotCs article on the creature type update, there was a debate about issuing an errata on creature types because it would create a lot of confusion concerning old cards
Furthermore, the card is also amazing for setting up cards like Clefairy ex, which is great for dealing with the Dragapult ex matchup
Worse yet, tapping down creatures doesnt remove the actual threat tapping down a Zulaport Cutthroat still leaves you open to their aristocrats effects, for example
It's pretty strong, consider it
By the same token, landfall is heavily associated with elementals, making cards like Roil Elemental and Omnath, Locus of Rage common mainstays in landfall decks
Genji Glove Genji Glove grants any creature the additional combat phase clause, while also giving the creature double strike