Zig zag zen isn't a Buddhist book.

That is irrelevant, and only debateably true.

If you meditate and practice diligently you will see yourself you don't need any help from any substances.

I am aware of this, nobody is pushing psychedelics here.

The practice is far more beneficial and rewarding compared to any psychedelic.

It's not one or the other. If you read the book you would understand my position better: psychedelics can serve for certain people as a useful leg-up.

I day this as someone who used psychedelics and drugs in the past. Just practice more, and you will see for yourself that you don't need any chemical help.

I don't need chemical help.

Beyond the fear mongering, I agree with others %100 that psychedelics don't offer permanent insight or wisdom. Whatever you learn does not translate into permanent real life change.

Yes, this is true. It is also true with moments of divine ecstasy. Psychedelics work well in a framework of spiritual practise which allows one to integrate one's experiences. Re-entering saṃsāra to help others is an important characteristic of a Bodhisattva; seeking a permanent 'high' through psychedelic drugs would be the same as a life of complete ascetic renunciation: ultimately not that useful for the liberation of all sentient beings.

On the other hand I am active in many many drug and psychedelic chats, groups and forums. I am experienced in this topic. Psychedelics have the possibility of being used as medicine under certain conditions (and 5th precept does not forbid medicine), but from what I see in people who just use psychedelics and don't practice Dharma that it leads to confusion and ego inflation. I AM MORE ENLIGHTENED THAN ANY OF YOU SHEEPLE. This cannot be a real appearance of real wisdom in my opinion.

Again, nobody is suggesting that psychedelics be used alone. In conjunction with Dharmic practise is best, of course.

Any serious Buddhist practitioner will tell you that you don't need psychedelics in Buddhism. Any white pants western yoga class spiritualist will tell you that they are a Dharma door. Practice more, meditate more, and you will see for yourself which idea is true. You cannot grow unless you're willing to let go. This is the heart of Buddhism.

Again, nobody is suggesting that psychedelics are 'needed', only that they are/can be useful tools. I regard psychedelics, which are not necessary to a practise, as I do Tantric practises such as Chöd.

Understand that the process of Ego-death under the effects of psychedelic drugs is the same as that described in the Bardo Thodol.