I have not tried Copilot, no. I'm not giving any tool money, personal info and access to my code when it can't reliably answer a question like: "does removing from a std::vector invalidate iterators?" (not a prompt I tried on LLMs but close enough).
That shit's just dangerous, for obvious reasons. Especially when you consider the catastrophic impact these kinds of errors can have.
There needs to be a fundamental shift to something that detects and fixes the garbage, which just isn't there ATM.
I never said I was an expert on Copilot, I've consistently said LLMs are not where they should be in terms of reliability, which is also true of Copilot.
Edit: oh and sorry for not being willing to waste my time trying out every new piece of tech on the block when all they're doing is rehashing unsound ideas 🤷♂️