It takes a very specific design of breeder reactor to make weapons grade plutonium. Proliferation concerns are a red herring by anti-nuclear activists who intentionally conflate non-weapons grade plutonium with weapons grade to make ALL breeders sound dangerous.

"Weapons grade plutonium" obfuscates that you can make a nuclear weapon from non-weapons grade plutonium, albeit with an increased risk of only getting the fizzle yield.

Nuclear weapons that are "only" a couple kilotons are scary enough for me, kthx.