It's his signature move. Any ASL stuff he "reviews" on his site that he doesn't like the look of, he immediately throws out aspersions about the decisions behind it and the quality of the playtesting or just flat out states that it was thrown together without any thought or testing even though in many cases, it is demonstrably not true. To my mind, playtesting only catches so much, and even mainstream publishers can only do so much with their playtesters.
And one needs look no further than Mark's own
oeuvre to see complaints about balance among his designs which could very easily subject him to the same criticisms he so frequently hurls at others.
For giggles, I took a look at his scenarios at the archive. I had quite forgotten I had personally logged a play of one of his "free scenarios" from his Designers Guide:
https://www.aslscenarioarchive.com/scenario.php?id=59671
View attachment 30191
ROAR has this one as 8 Japanese wins to 1 Indonesian. In our playthrough, the only one recorded at the archive, Colin managed to eke a last CC-phase win as the Indonesian despite Malf both AFV MA. We decided the scenario was a dog despite the result. More importantly, we had fun, because it was ASL.
So did Mark playtest this one at all? It would be very easy to hurl his signature criticism back in his face based on the feedback of all his scenarios to date. Archive user Kermit Mullens posted this just last May about another of Mark's designs:
Well that was a game of ASL. My SS are still scratching their heads on what to do differently to get across the bridge. By Turn 4, I was still not across the bridge and still facing Partisans on the north side. So, did the math and gave the concession. Not sure how the Germans are supposed to win this one with roadblocks, HIP Partisans., who are Fanatic with 3 Panzerfausts and a nice German HMG with a 9-2 directing it for fun. And so far ROAR seems to confirm that this is a Partisan gimme
Personally, I think the whole notion of "playtesting" is just something Mark holds over everyone else without really much understanding its limitations. That would certainly apply with regards to his critique of tournament rules. To answer your question more directly:
of course Mark will simply assume the worst of anyone doing something not completely to his liking. It's his schtick. When a liberal doesn't like your stance on an issue (any issue) he calls you a racist. And if he doesn't like your scenario or tournament rules, he shits on your playtesting.