Formal testing is surely a bit redundant at this point?
Genuinely don't see why this is creating such headlines. Starlink is (now) a proven way of accessing high speed internet more or less anywhere that falls within their global coverage and is relied on by 1000's of customers worldwide.
It's simple to setup, largely consisting of positioning the dish/receiver somewhere with a clear view of the sky and plugging things in. Instant high speed connectivity.
It's usually much quicker than 4G or older FTTC broadband and unless you can get proper fibre, which of course is better, will indeed provide high speed connectivity without needing to run cables.
Good way to burn cash I suppose.
As for selecting Starlink over OneWeb etc, suppose that's probably got a lot to do with Starlink being commercially available off the shelf - and available to buy and use right now.