If it's a Chinese e-bike, it's probably lying about being IPX67. OTOH, Riese & Müller $15k USD e-bikes aren't IPX anything because the Bosch components aren't. If you get it wet, just kiss that money goodbye. Absolutely bonkers.
Serious question, why would a person spend that kind of money on an ebike? An entry-level motorcycle is less than half that. What benefit does the bike get you that a motorcycle doesn't? One example among many: https://powersports.honda.com/motorcycle/cruiser/rebel-500
Bigger isn't always better.