They skewed the truth a little bit to please TB, he's clearly not a hardcore KF player.
I don't see any harm in them doing some preliminary balance passes, there's a long time to go until release. Besides everyone could see the regular trash was way too easy, it made sense to buff stuff up. It could still do with some buffing.
The zed HP scaling for bigger zeds needs to be looked at though, especially for higher difficulties. I strongly believe there needs to be the capacity for one person to skillfully (not counting endless parry matches, they have no practical application on the double FP wave when you also have tons of other trash) solo a fleshpound/scrake on 6p hard/sui/hoe.
Right now they ARE bulletsponges, much worse than in KF1, with no recourse to EBR's/LAR's/crossbows/demolitions.