Yeah this "Murkrow is so broken OMGOMGOGM" stuff is exactly what we are trying to avoid. The council believes that the Pokemon that have been unbanned were never broken and deserve to be unbanned. I, obviously, agree with this decision as I voted for it and wanted this for a very long time.
The general idea is, people thought Scraggy was broken for a very long time, even though as we can see now, since people actually bothered to adapt to it, it is obviously not broken. We felt that Little Cup's banhappy culture was detrimental to the tier and the general quality of the game. Basically, stop complaining because it solves nothing. Instead actually adapt to the metagame, instead of demanding it be adjusted to your needs :)
In terms of the Pokemon we unbanned, yes they are all strong Pokemon, but we feel that they are relatively balanced and it only takes a small amount of effort to prepare for them. Granted, if after some time we feel that the community has been unable to cope with the addition of any or all of these old (or new) threats, they can and will be removed at a later date.
I actually find that there are definitely ways to build incredibly powerful teams for this meta, taking advantage of Murkrow and co. and their weaknesses. If you are having trouble, and looking for a way to beat certain mons, feel free to look at my Old RMT in Issue 14 of the Smog, or any of the other teams of the era when these threats were unbanned for ideas on how to cope with them.