The 20-30 fold difference comes from comparing the weakest buds earlier to the strongest buds now. With proper weighting, potency has, at most, doubled.
That is all I am talking about. It has increased since the 60’s.
Anecdotal but there’s plenty of LSD available to those involved in the rave and club scene.
Not really intending to pick on you, but you said about “being many times stronger”. As the link show, at most, the average potency can be extrapolated to double. Hardly qualifies as ‘many times’.
Back in my day (25+ years ago) the blotters we got were usually 1/2" square. Then a few years later I saw some and they were 1/4" square, or 4 hits equal one of the old. If there was an equal amount on each sheet, then the dosage per hit would have been 1/4.
This is just my personal recollection, Your Hit of Blotter May Vary.
And there is no way this stuff could have been mistaken for meth.