So decks used to farm AI and arena should be banned aswell following this logic as everyone knows what types of decks are in arena and the spins should be changed so it's ridiculously difficult to get rares from these aswell? Especially as considering you know roughly what deck you're going up against it's alot easy to build a counter deck...these seems more of a problem than a completely random PVP game.
Just throwing my opinion in aswell as I don't see how anyone can have a problem, if everyone played PVP as often as it should be played the reward would be justified. Just because people don't play PVP doesn't make it a cheaters way to get cards...why dont you "rebel" against everyone in PVP and play it yourself so its harder for them to get cards? The reason is because it's alot faster to go into arena or farm the AI.
Although, they shouldn't be playing there own accounts, that's something I disagree with but that's easily managed by blocking mult accounts from the same IP, people have IPs that change, I understand that but something of to that extent is hard to manage.