May have, could have, might have - speculation, speculation, speculation - not science.
Mere analysis of the spoons ought to have by now determined if even minute trace amounts of “stimulants” were found on the “spoons”. Where is THAT report? Nonexistent.
When modenn people resort to matters in their own modern context and transpose it to ancient remains, they are doing bad science and bad archaeology.
Sounds like balderdash to me.