I posted a table from one of your "professionals public work" to illustrate that some have generated evidence to suggest that individual players have differential impact on the quality of shots against. I thought it was pretty simple.
I review and edit scientific journal articles and it's not customary to "show your work" when you are critiquing research methods. My critique is with the methodology that led to the conclusion. Correlating season-to-season relative on-ice save percentage and using a low correlation coefficient as the evidence that an individual has no role in save percentage assumes that there is no adaptation in the system (along with all sorts of other potential logical fallacies). For example, if a defenseman is consistently giving up high scoring chances, coaches are likely to do one or more of the following: 1) reduce quality of competition; 2) increase quality of teammates; 3) intervene with coaching, etc. Any of these could reduce the quality of shots against.
But perhaps you'd like to hear from a resident professional (Garret)
https://hockey-graphs.com/2014/07/0...-no-sustainable-control-over-save-percentage/: