If Deepseek can't even make a static site, why would I want to use it for anything else? (Not saying it can't, just that it's a weird choice to present your Deepseek-oriented product.)

I see your point, but as we know, devs from Google and OpenAI regularly use Claude Code because of its edge in frontend. I think using another model to build your own thing is a pragmatic engineering decision, not a sign of failure.