The use of LSD in psychiatry is one of the less wacky things about the state of psychiatry at that time. Arguably psychiatry is still wacky, and still overhypes novel compounds without knowing how or why they work exactly. LSD was very rigorously studied compared to say today’s use of ketamine.
For sure. But if you read some of that wacky stuff from way back, you can start to see how parts rhyme with aspects of contemporary psychiatry. They too had much better standards and data than their predecessors. The hype around LSD back then, and a bit of the kookiness, was similar to the current emphasis on trauma, ketamine therapy, etc… Stuff that works and is new gets overhyped.
Yes, there was a ton of psychiatric research on LSD. However the bar of required to perform pharmaceutical testing on humans is much higher now, and the quality of the data is much higher because of improved testing standards.