"The Day I Cheated Death" - Scuba Instructor Reaction

The Day I Cheated Death (Scuba Dive Incident at Moose Mountain Quarry, Ontario)
Posted June 2018, https://youtu.be/R-Byn4Io5s8, Water Temp 41F

Summary:
An uncertified diver posted this event back in June 2018, which occurred at Moose Mountain Quarry, Ontario. It’s hard to tell exactly what’s going on from the video alone, but the video description and comments by the OP since they are both illuminating and confusing at the same time. The OP is a certified diver now. I’m not sure if the panic was caused by N2/CO2 narcosis, over-breathing the reg, or? I’d be happy to hear some observations and opinions. Original video description and key comments by OP included below.

Video Description from the Original Video Poster:
“I'm an idiot, this was my 2nd ever dive (and) WITHOUT certification, I had been breathing incorrectly in some dumb attempt to conserve on air and panicked at 100ft when I was unable to suck in air from my reg which caused me to shallow hyperventilate, so because I couldn't breathe and my partner was already ascending above me. I made an emergency ascent (not even correctly) to the surface, causing my lungs to expand and throw up basically nitrogen upon surfacing. Later Symptoms included a minor headache, Dizziness, Muscle cramps, Chest pain and Ringing in the ears.

Two weeks after this incident. There was another experienced diver who died at the same location in 60 feet of water as he experienced something similar to me.

Before you get too eager and decide to be a condescending ass hat in the comment section. I have been certified and am currently an advanced diver with a solid number of dives under my belt including deep dives. I understand what happened during this dive, opposed to my definition in video which was again still before I had any training, so not need to attempt to give me some personal explanation of what I should have done or what happened. You weren't there that day.”

9 Months ago comment by OP:
“You need to breathe to live...