This backing track topic has been around since the advent of accompaniment and multitrack on organs in the late 60s early 70s (The arranger is just a spinoff of organ easy play features) and so unlikely to ever be resolved, all you can do is say how you like to play (Also what your audience wants) and leave it at that, as it all comes down to personal preference. (Claiming that you are playing live something you are not however is another matter)

Bill