but how it is different from any other POS coin?!
It's not. Some coins like bitcore or smartcash are also doing exactly the same distribution like DO by paying % of your balance every week/month.
DO just has the most amount of hype

you'd better register on depponion's forum and earn really good numbers of onion like 100-150 per week be posting posts about deeponion. so you'l start receive some coins extra like POS without investing your money
so instead of wasting your time postig here - post there and earn money

True, maybe he should do something productive for a change

Because currently he either prevents smart people from making good profits or prevents not smart people from becoming smart

Smart people usually don't support ponzis in exchange for pocket money.