This, 100%. "Hmm, if I just separate these potions I can stack them. That's clearly intended!"
Yes, Blizzard communicated poorly (probably because they fired a lot of their community staff.) but it was clearly a bug, and the people that abused it deserve what they got. Just do your time and accept that, as of now, they're not rolling those characters back too and that you abused a bug but come out ahead at the end of the day.