These analyses are intersesting but there are just so many problems with them. The biggest problem is that there are just not enough studies on trained individuals and some of their methods are very unclear. The paper I mentioned pointed out that the posted study talked about "sets per
muscle group" which is a little different than sets per exercise.
So their cool and everything but I would hesitate citing them to support my views...

since someone could point to these other papers criticizing these meta-analyses and the ACSM positions stand. I would point out that they were both by the same
person(s) who seems to be somewhat biased in their belief that EVERYONE can simply train the same way forever

, making it their business to criticize other's research.
Instead I'll go by what the experts out there who have worked with hundreds of individuals advise, my own experience, and the way people actually do it rather than some other realitly created in a study environment.