While I agree with most if not all of your points, the bit in bold is a subjective musical opinion. Divine Intervention is one of my favourite Slayer albums. Redeeming qualities include kickass vocals, extremely technical drums and guitar hooks for weeks.
Kerry King only said that he didn't like the guitar tones, iirc. I love how they sound when paired with the drums, as though the kit was made up of skulls.
I can't think of a better answer to any critics than this song. There's more in that album, it's so technical compared to anything Slayer ever did:
Also seems to me that Kerry didn't like the album because it was difficult to play live. Hardly any videos on YT of them playing the songs, including the one I posted.