I assume they're implying the new variable aperture on the 18 Pro is more of a marketing/spec sheet thing than an actual meaningful feature
Most users will never use it, or I should say adjust the aperture, most people appear to be more interested in the video performance, and the video performance depends upon having very good software and hardware combined as one which is where Apple is able to outdo the competition, with Apple Silicon/video software, Apple appears to only care about still pictures up to a certain point, over the last five or six years. In short video is king in today’s YouTube age.
I saw some tests on it and it’s kind of a whatever feature. The iPhone depth of field is still far too deep even wide open. So the difference stopped down is kind of meaningless.