Yes, there are shitcoins backed by nothing but trust and maybe false promises, but there are also premium tokens with real value backed by much more than your ordinary day to day money or stocks.

There is also 99% shit content on steem (including this post), do you blame steem for that??
Hell, there are 99% shitcoins in cryptospace, I mean the whole internet contains 99% bullshit. Do you hate the internet for that or what?

You blame BitShares for being an open space where everyone can create and trade tokens at will.
You certainly do not see the whole picture, freedom. And yes, that does come with a higher level of responsibility and due diligence for all participants.
Don't shoot the messenger.