my comment supposes an architecture of pre-existing mechanisms which appear just as plausible as what the OP proposes.

I agree.

I'm going to make an aggressive assertion beyond what is relevant in this context to increase the chances for me to be wrong.

"Prima facie" isn't a statement that ever saves a person from privileging the hypothesis, rather, recognized stupidity avoided plus "prima facie" is a hallmark of privileging the hypothesis, and one has only literally, technically saved one's argument from succumbing to reversed stupidity if one is physically writing about a random thing with the justification it is better than the stupid thing, but one has not saved ones self from it because the time spent on it remains spent..

You're overly presumptive about memes

The most well-established case in the world showing one car, chosen at random, is going north on the freeway at time t does not enable one to say anything important about the average direction of traffic on all freeways at time t.

Group selection is real, mathematically real, and present in all selection among sexually reproducing creatures. Its effect is not observable because that effect is swamped by the countless other paradigms that humans aren't programmed to (over) attribute. That's what is meant by "group selection is not real", that it is never a predominant explanation of any phenomenon.

The blog post is a random story crafted to appeal to humans and not be logically false. It can be defended by saying that all that is meant is logical truth of its stories being factors, but by Gricean implication, if one writes a blog post about an effect being real, one is claiming that this could be used to make a prediction and has more of an effect than the influence of Pluto's gravity on mating patterns of the Buffy-Tufted Marmoset.