It is a known effect of thrust reversers, you are debating about decrabing or not, you are not debating about using reversers.
The way I read the post by A37 is he makes the point quite validly that if you touch down in a crosswind with crab still applied on a slippery runway the immediate application of reverse thrust will cause the crab to remain in place and possibly get worse as the net sideways reverse thrust vector exacerbates the slide.
By de-crabbing at the flare and therefore eliminating all cross wind drift, immediate reverse can be used without risk of going sideways. Seems logical.