I think it's entertaining, but saying it's up there with The Sopranos and The Wire is quite a stretch. The show is pretty stupid when you really think about it. I mean the writers have Ray Donovan, one of the most connected men in L.A., travel to Boston just so they can introduce some irritating Whitey Bulger type from his past. The show is just full of annoying characters and they keep finding lousy ways to introduce new ones.
You mean like when Tony Soprano, the head of the NJ mafia, went out and made a deal with those cubans in Florida? Sopranos was guilty of breaking story rationality for use of the main character in scenes dozens of times. The first scene even if Tony breaking someone's knees in public view (A mob *captain* out doing enforcement.) But those things don't matter in the Sopranos, because internal rationality (Tony handled his own stuff until after Season 2) trumped realism. The Wire was different, but it's themes reflected that.
Also, as for this example specifically, Ray went to see him because he didn't have anyone else he could involve in a
murderplot, who was also connected enough to actually get in to see the guy. It would have made much, much less sense for him to send anyone else. Unless you're saying he could have just hired a hit man locally? But there has been nothing in the show so far to illustrate that he would use people outside of his organization to do something like that--Because in the show, it seems like him and Manny are the muscle. So them not trusting an outside contract killer, especially with something a sensitive as this? Makes sense to me. (And again, this is not realism, of course realistically the head of an organization doesn't get his own hands dirty--but internal consistency, much like in the above Sopranos example, trumps realism, unless your show is about realism, like The Wire.)
So, no, I don't think it's dumb when looking at this example...I mean, there have been dumb aspects of the show (Even the best shows have them--lol white knight Reporter/Serial Killer Mcnulty S5 Wire), but this example is not one of them.