LOL.... actually, you play a 'home' keyboard. I play a 'pro' one! (at least, that's how MY manufacturer describes it!)
But seriously....

Having lost one of my most essential workflow features to idiot 'market research' that decided not enough morons used this feature, I tend to be a bit more wary of the idea that arrangers SHOULD be optimized for the lowest common denominator. Hence my lack of humor about this...!
In fact, I think that Yamaha has one of the most 'pro', advanced OS's out there, with MANY features that I can only dream about (or whine futilely at Roland about!). Multiple drum tracks, synchronized arranger and SMF players, arranger based lyrics displays, break/fills rather than break/mutes, multi-pads, the list goes on...
But, as I've said before, sadly Roland use a 'home' OS in a 'pro' form factor and live sound, and Yamaha use a 'pro' OS on arrangers with 'home' form factor and sound. It a mixed up, topsy-turvy world we live in!