What’s more, it creates an incentive to accept more papers for publication, with obvious implications for quality.

what I'm seeing is that profs in the gulf countries are collaborating with profs and groups in third world countries where they are throwing money at the profs in the third world, who are doing all the work but don't have the funds to get published in these "prestigious journals"(its called the third world for a reason), so all these people get authorship for free.