I could be wrong, but seeing the interview i think i understand what he is getting at.
I managed to have a look on an older eddition of DoD (the 2016 eddition i belive) monster book, and the stats on it was a bit more expansive, but also rather cluttered in it's layout. It also had some vauge wiggle room on some cases (for example on Orks it listed their skill in ranged weapons, melee weapons and unarmed attacks, but left the damage values blank on the weapons aside a note saying "Orks usually weilds these weapons", meaning you would need to refer to the playbook to see what damage that weapon dealt).
Its in swedish but you can see the ork page here
https://www.spelochsant.se/uploads/imag ... iginal.jpg
With this, i can think what they wanted to do was to reduce this into something more easily digestable, so you can skim read the statblock to get what you need.
I do agree on the fact that they cut perhaps too much that could be useful for the gm, but otherwise i do like their approch of streamlining it. The less i must keep track off the faster i can get the game going.