It's cherry-picking if you only use one dictionary. It's present in the Merriam-Webster dictionary.

https://www.merriam-webster.com/dictionary/rooves

Ultimately I'd never use it. It's archaic and not in common enough use generally to feel good to use. Similar to monkies as the archaic version of monkeys.

Mostly. r/197 wasn't really a sequel to r/195. It was mostly made up of people banned from r/196.

Source: I'm a former r/196 mod.