Yep. I'm not going to bother replying or arguing with the posters that are touting psychedelics as causing breakthroughs in science and art. It's a common claim and it's exhausting.
When I was a teenager, I heard the claim and believed it. All these musicians and artists I looked up to did psychedelics! So I took psychedelics! What I came to find, however, was that all of those artists had some sort of classical training early in life and a decade of working hard touring/painting and building their professional practice. The drugs came after, not before.
I'll grant that stimulants may have made positive contributions. Oh how I love/hate stimulants.