The maximum demonstrated crosswind component is not a legal limit, it’s more of a guideline.
To the best of my recollection I think the aircraft manufactures use 20% of Vso or Vs1 to calculate maximum crosswind, this generally produces a low number, for example a Cessna 150 max X-wind is about 10-12 mph as I recall, this is very low if you use it as a hard and fast limitation. Pilot experience, aircraft equipment, airport runway conditions should dictate personal limits.