So there’s something to it because in half or more of the lessons you might take they will tell you to pressure the cuffs.
What's with this pressure the cuffs thing? Is it a USA (mostly) phenomena?
In recent years have done workshops and lessons with 15 CSIA L4s, 6 of whom were either current or former CSIA Demo Team Members (so presumably they knew a bit about the CSIA approach). None of 'em were advising us to pressure the cuffs. Maintain contact with the cuff as a reference, yes. Pressure it, no. Most of that was multi-day workshops so there was plenty of opportunity for the topic to come up.
There'd also be a dozen CSIA L3s and none of them mentioned it.