I was not enthusiastic about the idea, and I saw that the system was complex and difficult to understand for the average user, let alone a beginner, but I was really surprised that there were 100 members who had conducted reviews for this service. I did not read any of them, and I do not know how they were able to understand these complexities.
But after 100 members participated in that review campaign, I began to believe that it was a good service and that the problem was me.
It wasn't really that complex, the set-up process was way long and annoying, that's all, once you were signed up, it was normal to use but nothing really attractive. The way messenger, wallet, key and other apps were connecting with each-other was definitely one of the worst one can see.
I too would not say that the process was difficult and if it really provided the purpose to safeguard your coins, then it's worth it, even if it is a lengthy process.
Also, remember if you make any air-gapped device / cold storage, the process is complicated to sign the transactions offline and all this other stuff. So, it is more about if the solution is trustworthy people are ready to spend the money and also spend the time learning it, unfortunately after this hack, no one should be using Mixin services anymore.