They were talking about Falcon 9, which is absolutely being reused.

Alright, if we're talking about Falcon 9, I don't know what the cost savings are for a reusable rocket, or if there are any. If someone has that data, feel free to provide it.

> As of 2024, SpaceX's internal costs for a Falcon 9 launch are estimated between $15 million[186] and $28 million,[185] factoring in workforce expenses, refurbishment, assembly, operations, and facility depreciation.[187] These efficiencies are primarily due to the reuse of first-stage boosters and payload fairings.[188] The second stage, which is not reused, is believed to be the largest expense per launch, with the company's COO stating that each costs $12 million to produce.[189]

From wikipedia: https://en.wikipedia.org/wiki/Falcon_9#Pricing

There are a lot of variables, but very roughly, the Falcon 9 has cut launch costs in half compared to its competitors.