I think he is more than pro enough to demo Genos or other arrangers for his audience, both home players as well as 'ordinary' arranger players.
Most likely he do this demo for a musicshop, and if Yamaha should aim at only the 'pro players', there would not be many Genos sold.
How many 'pro's do you think is in that crowd you see in the video, and how many genuine professional musicians use an autocomparranger?? They most often play a solo instrument.
Baarthman is excellent player and do great demoes, no doubt, but if a demo is too complex stuff you aim for special users.
Just my $0,00000002