This is pretty much how it is buying weed anywhere. Everything has been crossbred with everything else so much to the point where it's hard to even know the actual genealogy of a strain. Something listed as an indica can give you crack head energy, while something that claims to be sativa will put you in da ground, much less in da couch. If they're even accurately tested to begin with. I've seen one brand labeling what was supposedly Grand Daddy Purple as a sativa dominant hybrid. It's either not that, or not GDP.
Further, actual research has shown a persons individual biology combined with the individual biology of each individual strain has much more impact on how the strains effect a person than whether they are "sativa" or "indica."
So your relationship with Grand Daddy Purple is your relationship and someone else's may be different, but you can generally be sure you'll get the same kind of high from the same strain each time.
Sure, but GDP is supposed to be the original strain (hence the "Grand Daddy" part of the name, much like OG is supposed to indicate it's the original incarnation of that strain) and the original strain was indica. It doesn't give me much confidence in the lab testing when the lab sticker says it's something it shouldn't be based on the strain it claims to be. Either the grower is lying to me or not actually having it tested correctly.
It's all about the terpenes in it, and knowing if it was indica or sativa used to be a fairly good indicator of the type of high you would experience. Now you really have to experiment with shit or have very knowledgeable budtenders. Especially with concentrates because they often add terpenes to it that may not have been in the strain they made the concentrate from, which affects the high.
While you're not wrong about how things have been crossbred, you need to be re-assessing if old wives tales from the 70's are as accurate as scientific research. "Indica" and "Sativa" were never meaningful terms for the kind of high they gave you, and we never had any evidence to support it except anecdotal evidence.
Here's my anecdote. When it became legal here, I'd try to find what tastes good. Sometimes I'd want to die laughing, others I'd want to sleep. Either way, the illegal stuff I'd had never hit nearly as hard. Then I started paying attention to packaging. Sativa was my laughing drug 100%.
Problem is, like mentioned above, most of it now is "a blend!" and it's bullshit.