I've used RestTalk Chinchou probably more than anyone, and I've never once had problems with Murkrow when using it except when the opponent had Diglett as well. So I'm not really buying that it's easy to wear down or whatever. Mostly because the only way for Chinchou to get worn down if you're using it for Murkrow are 1) it's taking hits from Murkrow, and 2) entry hazards. If it's taking hits from Murkrow, that means Murkrow has to have come in, and that's not the easiest thing. Entry hazards shouldn't be a concern for the Chinchou user either because almost every good team has SR or some form of passive damage, and that means Murkrow isn't going to be able to come in any more than Chinchou can. IDK, just not buying it. Yeah it's set up bait for "all the common set up Pokemon," but in LC you have to realize that only means Scraggy, Drilbur, the rare Dratini, and defensive Pokemon setting up hazards.
I do agree with Heysup that Murkrow really doesn't require team support. You can literally just slap it on almost any team and get good results. I also agree that it's undoubtedly the strongest Pokemon in the tier. IDK, I guess I have still always found it manageable though. It's one of the only Pokemon that you really have to build in a specific way of dealing with (there are a lot of major Pokemon that you can just play around, but Murkrow is definitely not in that category), but options exist so I guess my opinion is to suck it up and use them?
I'm mostly neutral on this, though I guess I would prefer it to remain allowed.