My first instinct has been - well this is an open source project, what does it matter. But even then, I am guessing that using their service even for open source projects still provides them some value.
Kind of funny that you're assuming that you are not paying with your data in both cases.
Do I need to remind you how LLMs are being trained? ...or that Anthropic claimed their codebase is 100% vibecoded, making it uncopyrightable by their own logic? ...or that Anthropic took down all Claude Code leaks they could find using DMCA takedown notices? ...or how do you think the caching mechanisms work when there's allegedly no data stored to be able to cache it?
I'm just saying. Anything you build with online models is their training data anyways. Assuming otherwise is pretty stupid at this point.