I just think it's a bit misleading to call something "open-source (xyz)" if it wholly depends on a proprietary service that provides (xyz). If you made an open-source implementation of the Discord client, it'd be misleading to call it "Open-source direct messaging and communities app". At least in that example it would be possible to reimplement the backend and make it truly open-source, but so far nobody has been able to reimplement GPT-4V in a way that it's nearly as useful. Hence why some people get super excited when they see "Open-source [...] AI (using vision)" and super disappointed when it's just another wrapper for OpenAI