I agree in general with most of his position.

One statement that fell outside of my agreement was him balking at how people leaving Reddit could cause it to crash. Fewer people should mean less load :O

That position reminds of me of the Simpsons episode where Homer runs for mayor. At a debate, Homer's opponent shows up late because someone cut his car's break lines, and Homer goes - "Well then you should have been here early!"

Any sufficiently large irregular site activity will cause issues. The people who are 'leaving' aren't being inactive. They're either disabling accounts, or disabling sub-reddits, all of which causes activity on the servers. It's absolutely to be expected that outages occur.