It sometimes we give time for them to show or to prove that they can be trusted and gives what most investors wanted to see. We never just to accused them as another scamming exchange directly, it (maybe) could give us a satisfying service that the others can't do. I hope so.
New exchanges like OP have mentioned (Whitebit exchabge) is having a hard time to build their reputation since it was just launched this year. And since I haven't use such new exchange like that, tried to google it and I wasn't be able to search some feedbacks about it.
You can always test the exchange by depositing few bucks and if you can be able to withdrw from it without a problem and always see how secured the site is. So far, i visited the site and it's too early to judge.