That's no big deal. But it costs more.
The fact that the CBD MJNA uses in its products comes from seeds and stems is no big deal chemically, but it's the cost that's the killer.
Coming from seeds and stems, the oil is only about 3% CBD, and requires a lot of processing to bring the CBD content to 15%, or so, which is the natural level of CBD in high-CBD marijuana strains like Charlotte's Web and R4.
That's why the CBD from MJNA is about 5X the cost of CBD from Charlotte's Web.