Not all the doubt's 'bad'. There are times we are required not to rush to believe something before we feel certain about the facts. Urging the desire that you trade using the Forkdelta platform, I think that's good until now there have been no bad cases that have resulted. But you can doubt it if you feel uncomfortable. Sometimes the reputation of bad exchanges often brings evil to other exchanges both now and in the past. So it's no wonder if finally you / the community provide a valid reason to doubt it.