Faark parent
The reliability data will be collected by inspections. Also from memory, their fleet leaders tended to do Starlink launches. Loosing one of those might suck, but can still be sold as due to pushing boundaries and something that wont happen to customers. They need backup launch equipment, ofc.
The gold standard for reliability studies involves collecting in situ failures though. You can infer a lot from inspections on non-failed components, but it's not as useful as having actual failure data. When I'm referencing their in-house data, I'm referring to failures (whether in situ or as a bench experiment)