They should probably revise the tiers to be completely honest. There's no reason for names to be shouted out on podcasts at that low a tier.
Not saying I backed for that purpose or insist on the names being read every month but $25 a month isn't exactly low if you plan to give that consistently. Plus it's a really special episode and a nice gesture to do it like that this once. I'd have backed at $50 for that respective reward but I'd feel horrible to scale back my contribution after a month or two because I couldn't or wouldn't want to afford it every month.