I have absolutely nothing against the publisher of this article, but I do not believe that Omarion's cover to Aaliyah's song "One in a Million" was as unprofessional as you've described.
Really, this article is very, very, VERY opinionated. And it seems like it has done all the thinking for the commenters.

I do have to agree that it is quite tactless to do a cover of a well-known and respected artist that has passed in an attempt to revive one's (Unfortunate) dwindling carrer, and I agree that it is the wrong way to revive it. But, who's saying that this is the reason that he decided to do a cover for Aaliyah?

Omarion cannot be THAT selfish. I believe that he has the talent to come back strong one day. Just, now is not the time.