"ALL American aircraft and pilots are LIMITED to land with a MAX tailwind component of 10 knots."
SKS,
The B737 tailwind limit changed to 15 kts a few years ago, maybe after you left. The B757 has 15 kts for a few of the special airports. Two obviously different birds in the landing arena.
I think the 15 kts came with the tenure of the last El Jefe, the one with little feet that had no chance of filling the big shoes of the job.