so, the GG4 was a clone only unicorn that did indeed have plenty of stabilized traits that made it into the genepool
your seeds are some dude (who knows who) and their version of a plant that looked/smelled/tasted perhaps like this GG4 or someone told them it was GG4 or similar, then they hit it with mid (joke for myself) to make it autoflowering
its like your local little botanist making some crazy exotic rose flower that they bred for generations and is utterly a unicorn, then once it makes the news for being so sought after....then walmart is calling around saying 'can anyone make something that is close enough to this to sell?'
it isnt all smoke an mirrors and scams though, the science behind being able to recreate that GG4 from a breeding perspective just isnt there yet without generations and generations of stewardship. the industry isnt really there IMO. folks that are doing the type of math-driven breeding like this, their unicorns get spun off into separate IPs and companies. either that or you've never heard of em, like not too long ago this stuff called Bicket OG was making the rounds. You can find test results in the US from this cut testing over 50% secondaries............that is less than half plant material. That takes incredible breeding and time. And cookies or walmart doesnt have it lol