That's exactly the seeds I suspect. Stabilized how? Guaranteed those are crossed. Guaranteed.
You're regurgitating the story all of us have heard. Without your own personal experience. I maintain the stuff. It's long flowering and I tell buyers this along with the landrace trait of multiple males. Another reason the landraces have disappeared for the most part and I helped!
When you get little seeds and they're not like the big greasy brown ones and these seeds produce plants that finish in October instead of November then guess what? We didn't think shit about letting them cross. Tighter buds and done quicker? Easy decision.