Bitshares

I received this comment: "Basically, the customer gives you BTC/ETH/whatever and you give the vendor a “dollar pegged coin.” So... what pegs those coins to the dollar? Magic? Fairy dust? If I had to guess, I’d put my money on fraud. You are aware that most of these Tether-like currencies are unregulated, right? That means the private company claiming to have 100% reserves in a bank doesn’t have to meaningfully prove it to anyone. They only have to keep enough reserves to cover withdrawals on any given day. In other words, if you give them $1, they can print 10 “Smart”coins, give you 1 and keep 9. Smartcoins are probably worth 10% (at most) of their claim."

What are the advantages of staking Bitshares in a pool ? Does it make any sense ?