You might consider that the demographic of Keyboard magazine may be changing, as more magazines start to address the younger players, and their particular needs (none of which are in the slightest interest to all but the few, here at SZ), like Future Music, etc., and the readership of Keyboard gets older.
Older readers, older products get advertised...
The manufacturers get a very detailed breakdown about age and income demographics before they spend their money. All this may simply come about because they see that Keyboard is being read by increasingly less younger players.
Add to that that many modern WSs are SO tailored for modern music, that us older players are almost FORCED into choosing arrangers as the only things left that have seriously old school sounds and capabilities..
And, let's face it, few kids have the skills to use an arranger well, and few of them have any interest in the sounds and styles provided... Arranger manufacturers, faced with a dwindling target market, are going to HAVE to be more aggressive in their advertising...
And don't let anyone kid you... Reviews in ANYTHING other than Consumer Reports are driven by advertising and money. When was the last time anything that DOESN'T advertise in Keyboard got reviewed? There is an increase in arranger advertising, and lo and behold! There is an increase in articles and reviews.
Coincidence...? I think not....
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An arranger is just a tool. What matters is what you build with it..!