The phrase “bridle lame” has also existed for generations. “Old fashioned” does not automatically mean “useless”. An ill fitting bridle will cause evident body problems.
People spend a fortune fitting saddles and it is now exceptionally rare to see horses with white spots on their withers, caused by poorly fitting saddles, that I recall from my (distant) childhood. However, today I frequently see poorly fitting bridles, with e.g. over tight nosebands, buckles resting on pressure points, browbands too small and bits to high/low. Too many people do not appreciate the importance of fitting a bridle correctly and too many people don’t know how to adjust the bridle to fit.
Essentially, a bridle hangs a bit in the mouth and all the rest is about education and training.