I’d bet they just added it to their global .gitignore where it should be, then removed it because they didn’t want their private dot files committed to a public repo.

I don’t think this user knows much about git works. I don’t think this is nefarious or “vibe coding” as it’s colloquially known to be. It’s a bit much to describe all LLM use blindly as vibe coding, when vibe coding usually means just blanket accepting AI content.

I don't think the concern is as much with the purity of their vibe coding, but rather that they're using an AI-first editor. This will almost certainly mean everything they're coding is being shared with AI provider(s) during the process, which some would view as at odds with Proton's stated emphasis on privacy.

Is the privacy of their code that much of an issue at this case given its a public repo? Its going to get scraped by the bots regardless.