Yep, Claude made an executive decision to use Axios when it built one of my projects 9 months ago or so.

... and would then forget to use it 1/5 times and break auth/sessions in new code handling by using plain fetch.

This is why people still need to know how to write code and why it is asinine to have an LLM write code without a human reading it. Good developers should know what good code looks like and push back when what they're fed is wrong.