True but he does say "it is waterproofed" [1] and this is the common way of referring to this level of water resistance (IPX8, 1 meter for 30 mins). I wouldn't take it in a hot shower, but IPX8 should be good for more than being "water resistant" to incidental splashes.

1: https://www.youtube.com/watch?v=KTlRBI2QCzM