There’s no point looking for logic. These people truly believe granting a licence restricts the rights of people who don’t agree to the licence, which is the exact opposite of what licenses do. It’s blatant misinformation but if you call them out on it (even by quoting their own link) they literally think you’re an astroturfer for AI, because that makes more sense to them than the fact they’re obviously wrong.
I leave on time, how is that an insult? I’d be much more insulted if someone asked me to work for them for free. That’s what unpaid overtime is.