The fact is that language matters, and the version number is a way to communicate the developers’ perception of how suitable something is for use. If they refus

The fact is that language matters, and the version number is a way to communicate the developers’ perception of how suitable something is for use. If they refuse to label it as 1.0, it means either: they don’t think it’s in a stable state yet, or they don’t realize the importance of this type of communication. Either way, it’s a red flag for people who might otherwise be making a large investment in time/money into using something. It’s not feasible for everyone to do a full evaluation of everything. At some point you need to rely on an expert to at least provide some basic assurances before spending time on digging deeper.