I see the conflict you are pointing, but then "in theory" they can reduce PNP CRS requirements accordingly.
I think the fall is not happening by chance, it is falling by CIC design. When they stopped giving 600 pts for jobs (and convert to 50 and 200), they cut low CRS candidates ability to leapfrog with job arrangement pts. I think this applies mostly to inland applications, since outland job arrangement practically low-low chances.
Please check draw #48 cutoff 786!!! Meaning someone with 186 CRS+600 pts achieved ITA. 186!? (even if you add current 200pts still 386pts)
To increase the influx of candidates with higher HC pts, I believe CIC designed point values, in a way to reach 400s in cutoffs. May be even slightly lower. In this points situation, like I said above, PNP can still function, if they reduce PNP CRS requirements accordingly. They will help ppl with CRS 300 to 400.
I personally think, the economic benefit gained from a candidate, with 300+ has a lot of HC value compared to 186. Hence, CIC is executing this.
BR