Since 'dust' is a descriptive term, not a technical term, I think that he's well within reason to call the tiny wallet transactions 'dust' and talk about ways to make them productive.

But if you insist on being pedantic...

dust is a new term operated by steemit cooperation

Steemit Corporation only runs steemit, inc, not Steem (although they still take lead on Steem development). Dust as your are defining is a blockchain term, not a Condenser term.

if for any reason , your post, or comment has a reward less than 0.024 steem, then it will be after 7 days for the posting date ZERO REWARD.

The cutoff is actually 0.02 STU, not 0.024 STEEM.