Maybe it's better to read each white paper (Golem and Iex.ec) yourself.
Every post you will read here can be motived by the writer interest.
For serious project, you'll find full team ID too, and you can google them.
Honestly im no technically versed enough to read a whitepaper and know if im being scammed or not, so I hae to outsource and know the opinion of 3rd persons that are skilled enough.
The idea (in principle) is good, but again, i've read critics saying this is not going to work in practice.