That is definitely 100% false. You can drink yourself to death in a night, I almost did. Woke up in the ICU after blacking out with an O2 of 70%.

You have never done LSD so I won’t even bother with my experiences on it other than you don’t lose your sense of reality, risk or self-preservation.

I have friends who have had serious permanent vision changes as a result of taking a reasonable dose of psychedelics one time (which is one of the main reasons I haven't tried it). If you overdose on either lsd or alcohol you'll have serious ill effects.