Well, it's both. You need to ban book bans so that you can have the conversation in the first place, but you also need to change people's mind so that book bans never come up in the first place. It's a guardrail, and ideally we're not leaning on the guardrail
You have to change their minds about what legitimates a ban, and about these specific things they don’t like not having the necessary legitimation. And that’s not an easy change, it needs to be grounded emotionally.
They aren’t banning anything. You can still freely buy any of those books. They’re just changing what content public libraries spend money on. Not really much different from states deciding school curriculum.