I liked Leos talk too. The only tenet I didn't really follow was him making MeO out to be the only way to have notions/realizations/experience; but hey we're all different, so .  Id argue that a large enough dose [NN-DMT), right setting, and taken instantaneously can propel you to those white/clear light/absolute infinity/all of existence type experiences (those phrases don't even do an experience like that justice).

Nearly all of his talk though I really enjoyed and his talk closely resembles my strongest NN experiences, especially the book 'Darkness Shining Wild'. If you enjoyed his talk then DSW is an absolute must.