Oh, right, thank you and GP for reminding me, there was more discussion of this:

Here Gelman's pieces (at stat modeling):

https://statmodeling.stat.columbia.edu/2019/11/18/is-matthew...

https://statmodeling.stat.columbia.edu/2019/12/27/why-we-sle... (<- more links in this one)

Quote from Gelman: > We’ve left “super-important researcher too busy to respond to picky comments” territory and left “well-intentioned but sloppy researcher can’t keep track of citations” territory and entered “research misconduct” territory.

This may be a response by Walker to criticism:

https://sleepdiplomat.wordpress.com/2019/12/19/why-we-sleep-...

Here's a reddit discussion where Guzey responds to that response and raises further points:

https://old.reddit.com/r/slatestarcodex/comments/ekdbo2/matt...