I let the bike idle for maybe 3 or 4 minutes then rode it 2 blocks down to get primary oil. Shut it off, went in to store, got oil, rode 2 blocks back and shut it off so I doubt it was hot or at normal operating temp. It's 30 degrees here in Iowa so it would have taken me 20 miles to get it up to temp. Too cold for me.
Honestly I never did much more than that on my old bike either. But again my old bike had a 21" front wheel. Anyone that has had that set up will tell you the bike will lean farther on the side stand so the oil will always show lower than it really is.
"If you actually drained as much oil as possible, it would appear you still had 16 ounces of oil in the crankcase, cam chest, oil cooler lines, etc. That would be rather excessive in my experience. You might want to drain the actual crankcase and measure the amount of oil remaining there. Anything over 6 ounces is excessive and could indicate an oil pump scavenging problem."
Oh lord don't say oil pump

I just went through that with a buddy's bike. My bike has 900 miles on it, I would hope the oil pump ain't bad. Everyone knock on wood please.