Cool and all, but there's not a single mention of "hybrid" on the entire page, which means that this is not targeted at the majority of, say, US agriculture.
The general public does not understand agriculture well, and I've noticed that this misunderstanding is stronger among those that have huge huge concerns about seeds and GMOs. Hybridization is a huge benefit, one of the primary reasons to use seeds from somebody else; you get a better crop and somebody else has done the work of hybridization. It doesn't matter if your seeds are patented or not if you are using hybrids, the seeds from hybrids do not perform as well as the hybrid seeds.
While it is fantastic to have the source seeds for hybrids, those that have concerns about our agribusiness would do well to learn more about the great skill it takes. Specialization and different roles is helping improve productivity immensely, which means less land is used by farming, and more land can be maintained, or returned from ag use for ecological restoration.
And even outside of the seed business, specialized knowledge and skill is incredibly for boosting productivity. For example, almond farmers in California are far far more productive than pecan farmers in the South in part because of contractors who specialize in the planting and bed preparation for a new orchard. If we could transfer this skill set from California, perhaps California could stop using so much scarce water for nuts, and pecans could replace almonds for many applications.
Deep knowledge, deep tech, and high specialization are good things for advanced economies. Open source seeds definitely advance that advanced knowledge, immensely. But we must also abandon pastoral aspirations of converting farming back into a hugely labor intensive activity as it was, say, 150 years ago. Except for the few that want to do it as a hobby, our backs will thank us.