This is an interesting dilemma.

As a matter of fact the majority of current arrangers buyers are senior people (look for example on YouTube at who are attending Yamaha arranger demo events). Even worse (see later), they are the ONLY buyers of top of the line arrangers (those with the highest profit margins).

So to please them you should deliver content that was popular when they were young (you keep your imprinting for the whole life).

On the other hand this profitable source of income (you can easily harvest serving the old and tested product --> no R&D costs) will not last for much longer (limits of human life).

So, understandably, the manufacturers try to please the younger generations in order to carry their business into the (distant) future. Here explained the EDM content (new generations are unlikely to enjoy Jazz and Big Band & Oldies genres that are so overly represented in arrangers).

But in doing so you risk to alienate your current buyers and major source of income (those that today shell out a respectable 3/4 K€ for a keyboard that admittedly does NOT use cutting edge tech and is not decisively different from the previous model).
After all they could simply keep "forever" their current gear, given that features-wise it is probably heavily underused and the limiting factor is by far the player.