Randy I can't speak for Walter, but when I started cultivating in the 70's ,land race Sativa's were as common as stretch marks on a hookers ass ........and while some were truly stellar,some were just mediocre at best......
Some Sativas like Santa Marta Gold circa 73-74 were outstanding ,as were some of the punta roja's from Columbia, and some of the Vietnamese,African, Thai and Mexican strains...
But just like strains today,not all were that potent,tasty,unique,or desirable.........
Your comment, >remarking that "smart people look for long flowering genetics and AVOID high thc levels, while cash croppers grow the fastest strain possible with the most thc to make up for it"and how "all the hybrids are boring at best "
Well that comment is going to have a lot of folks here laughing, like it or not.......
Thank's for sharing that opinion,but , it is just your personal opinion..
You're gonna find a lot of people here have a differing opinions,and oh yeah I have read the Cannabis Breeders Bible...fwiw.....
Good luck with your Sativa quest,I hope you find that special,enlightening,spiritual, mind bending ,psychedelic, pheno you're looking for.......