He means that the Mafex Wolverine whose look is also based upon Capcom reference art has arms that easily fall apart at the biceps swivel. If you don't specifically hold them together as you work the arm articulation then it falls right apart, but once you realize it does that it's fairly trivial to work with in a way that doesn't fall apart. That figure came out on 2020, but they did do a re-release a year or two ago that I've heard doesn't do that anymore.
You could tell that Wolverine was based upon Capcom art for several reasons. One was they showed him in several win poses from the games in their promo images, and the other is that he had blue tiger stripes that people complained about endlessly but matched the loading and win animations before and after matches.
