Yeap, absolutely the case.
Quote from the description: Please note - Pixel Bearings come lightly lubed from the factory. While you are free to clean your bearing for maximum performance, CLYW & iYoYo HIGHLY recommend that you break in your Pixel Bearing with play, and allow the lube to naturally settle and break down. This will result in a longer life, longer spins, and smoother play.
I also have pixel bearings in my Titanic and my Shooting Star and they both need breaking in.