I mean I don't have a strong opinion but if I used the phrase open source models there'd be 5 comments going in the other direction.
I'm happy to have and be able to serve these models and see the ecosystem thrive. And lots of open innovation is outside of weights anyway as DeepSeek repeatedly shows.
You used the right term. I don't know what the parent commenter is on about.
Open source has historically meant you could download the source and build your own binary. The appropriate analogue here, IMHO, to the build->binary process is training->weights.