I have much more ammo than him. More guns too. Mostly bought during Clinton when gun bans loomed. My wife has not voiced complaints about my hardware.
Yes - but you plan on using your ammo at some point. Or at least to have it on hand in case you need it at some point. This guy seemed to be planning a one-time deal, and seems to have no rational reason for buying so much ammo. (ha - I used the term “rational” in talking about this nutball).