This shouldnt be surprising imo. I’m sure you could achieve similair results back in the day, but the way most bud is grown is just so different now. Theres so much environmental control and such high standards.
Most weed before the legalization movements started was just brick weed grown wherever it could be, for as cheap as it could be. You were lucky if you had a plug with quality mids. Now you’ve got funded studies, thousands of people trying different techniques for fun, and most importantly – competition. I’m not sure what the genetic limits are but I reckon well either find them soon, or people really will starting losing their minds from the smoking reefer lol.