At the worst, this is sloppy wording on the part of the AAIB. This particular form of words is often incorrectly used to describe the "Demonstrated Crosswind" of an aircraft; you'll find many examples on Pprune.
Perhaps the only impuning of this pilot (and others who operated this aircraft) is that there is the implication that the Malibu had regularly been handled in a ham-fisted way, and landing in the conditions described might be seen as evidence to support that view.
2D