I ran it all through Slopscore and consulted open-slopware, and here are the results:

• ⬛ Linux has at least 2,274 slop commits, to date.
• 🟧 FreeBSD has at least 53 slop commits, including some from Anthropic themselves.
• 🟨 OpenBSD and NetBSD have a couple of slop commits, but nothing colossal. NetBSD also requires any AI-generated code to be signed off by the core maintainers.
• 🟨 DragonFly BSD has at least three slop commits.
• 🟥 MidnightBSD has at least 292 slop commits.
• ⬛ NextBSD is entirely vibecoded.
• 🟩 MirBSD has an anti-AI policy, but only supports i386 and SPARC, and is currently unusable anyway.
• 🟩 HyperbolaBSD has an anti-AI policy, but hasn't been released yet (they're still a Linux-libre distro).
• 🟩 CoffeeBSD is a slop-free fork of FreeBSD, but has had no commits since it was forked.