What's scary are pilots on here admitting they do this "technique" when it goes against the manufacturer's recommendations on crosswind landings. I definitely would have handed out an "epic fail" to someone had they done this while I was an aircraft examiner.
This particular technique it is not a limitation, nor prohibited as contained in the Boeing Flight Crew Training Manual for the Boeing 727 and 737.
Perhaps other crewmembers can provide information about other Boeings, and other manufacturer specific rather than airline specific such as Airbus, or Embraer.
With that being said, chapter section page contained within your airline's specific flight crew training manual would have to be provided to "Epic Failed" applicant/pilot.