I don't recall RexBanner saying he landed with a 30 knot or more crosswind. I doubt it would be possible to pull that off without it getting reported to the FTO, if not by the tower, then by the crash crew that scrapes the wreckage off the sand on the leeward side of the runway! He does seem to claim that he might have exceeded the 17 knot crosswind limit, but his main point was that the forecast weather often changed and there were gusts in the 30-35 knot range. It's not ideal, but when you have to get down, you might have to have a few gos until you get it down between gusts.
I'm not sure why he takes it so personal that someone claims Oxford grads don't get enough crosswind landing experience though. It seems like a few years in on pprune he'd know better the futility of going after the windup merchants with large chips on their shoulders!