That's a huge deal - that they are improving the repair-ability. Since Tesla has shot itself into their foot by not designing their cars with repairability in mind. They already have a disadvantage with the aluminum construction. So they needed to be extra mindful of how damage should be repaired.
Tesla owners have long complained about the higher insurance premiums of their electric vehicles, with insurers often preferring to total the car than pay to fix it. In the case of the Model Y, though, premiums don't need to be as high, according to a long-term repairability study.