This weekend I tried what I'd call a medium scale agentic coding project[0], following what Anthropic demonstrated last week autonomously building a C-compiler [1]. Bottom line is, it's possible to make demos that look good, but it really doesn't work well enough to build software you would actually use. This naturally lends itself to the "everybody is taking about how great it is but nobody is building anything real with it" construct we're in right now. It is great, but also not really useful.
Related, this reminds me of the time Cursor spent millions of dollars worth of tokens to write a new browser with LLMs and ended up with a non-functioning wrapper of existing browser libraries.
[0] https://www.marble.onl/posts/this_cost_170.html
[1] https://www.anthropic.com/engineering/building-c-compiler