Earlier quoted context omitted.
downvoted for irrational mysticism
It's not particularly irrational or mystic. That experience he describes is quite common for people who use mushrooms a few times. What is the difference between you and a chair? What makes your brain so special, and why is it so important that it continue to exist? Why shouldn't a stick held in your hand be considered part of your body (in fact, one of the big differences between humans and most animals is that, unc…
Still, there is no reason whatsoever to refuse materialism due to a mushroom experience, that is why I called it mysticism. The fact that your brain state alters because you consumed a tiny amount of a certain chemical should be proof of materialism.
The statement that "everything is connected" is meaningless without defining what you mean by "connected". In some quantum-physics way your brain atoms are connected to the atoms on the Jupiter, which is fascinating to think about, but without any real consequence. This fact doesn't change when you are high on shrooms.