Relay is the app I’ve been using for the past decade. It’s great, and I would pay a subscription fee even though I paid for the app, but it wouldn’t solve the other issues with the site. Mods still wouldn’t have the tools they need to be effective and NSFW posts wouldn’t be accessible, for example. Plus I don’t like the idea of giving money to companies run by the likes of Steve Huffman.
I was a researcher for around twenty years and almost passed out leaning over an LN2 tank like an idiot looking for my samples once. No pain, just felt some tingling and rapidly fading consciousness. There was still a good amount of oxygen in the room since the alarms never went off. Just glad I started to fall backwards instead of into the tank.
I’ve also experienced nitrogen narcosis while deep diving, and that actually felt good.