A personal bugbear is the AI fascination with calling themselves open source, virtue signalling I guess. Open weights is exactly right. Source code and arguably more important datasets are both required to replicate the work, which is more in the spirit of open source (and science). I think Meta is especially egregious here, given their history.
Never underestimate the value of getting hordes of unpaid workers to refine your product. (See also React, others)
Never underestimate the value of getting hordes of unpaid workers to refine your product. (See also React, others)