Ok, I will soften my opinion. Maybe it is a matter of definition.

I consider base weight to be technique. For example the owner of zpacks hiked the PCT with a sub 5 pound base weight. His accomplishment was hiking the PCT using the SUL technique.

Elite infers competition. Maybe I get that from the sports "elite eight."

IMO anyone that is willing to put in the time, energy and money can master the SUL technique. If you join the armed forces special operations they will even pay you to master the SUL technique (M16 and ammo is not a part of base weight.)