You're on the right path with that. Sometimes people with these mindsets just need to be spoken to, and that may (on may not) open their eyes to the ways they may have been inadvertently steeped in, whether that be from upbringing in a hatred filled household / community / etc., or a search for acceptance in those circles. I have someone at my workplace who is an outspoken anti-LGBTQ+, even going as far as plastering their laptop with heavily right wing anecdotes, and wearing very questionable shirts with horrible messages. But I'm here to eventually try and reason with them, and you're absolutely right it'll be an uphill battle, but one worth trying.