It's really not decentralized, because you still have to trust a middleman, but hey. Though it's definitely not for everyone, having the option to invest in "tokenized" versions of stocks is a good thing in my opinion; I just hope that people know how it actually works before throwing their money into it. In this case, it's pretty much just the case of, if you don't like it, then don't buy it.
Will I be using it? I really don't know. I'd have to do some research on DX if they really actually are trustworthy enough or not.