They‘ve stated clearly that you pay the same. Its just calculating stuff differently that you can now remove a dedicated machine mid-month and get the remaining time‘s money back. Which wasnt the case until now.
They have been using this business model for years for their VPS products and Hetzner has slowly been moving to unify their products because it's such a disjointed mess right now.
Like, it's completely unreasonable to expect to pay more.