I can just imagine Trump in his suite at Mar-a-lago going over the budget and looking down at his left foot and going, "anyone got a gun?"
I expect some Trump apologists are going to parrot the WH line of "streamlining" and "budget draft."  Both of which are ludicrous.  On the one hand if the opiod epidemic was one of "Trump's top priorities" this wouldn't even be in the budget draft let alone in such high numbers.  On the other, how is a 90% cut without any evaluation of effect/study of waste anything other than just a pretextual/alt-fact based line of horsepucky?  More likely Trump is just throwing out numbers based upon his distrust of government programs and agencies.
I almost feel sorry for Spicer as I expect he'll have to walk this back.