Has the PS4 Blu-ray audio issue been fixed on PS5?

[supersoundwave]

Hey all,

I have a couple of questions regarding Blu-rays:

1. The PS4 had sound issues with Blu-rays; sound was very low in some cases, which many attributed to a faulty "wide dynamic range". Does the PS5 have this issue too, or was it fixed?
   
   
2. Is there a way to delete Blu-ray data? I sometimes like to start Blu-rays fresh when I watch them.

Thanks!