I question how much work has had done analysing the company. I bet he is making the mistake of confusing gross price increase with net price increase. Net price increases were much lower than gross
Munger is a great investor, however, ins't the success of Berkshire, according to Buffett, largely been driven by buying companies with big moats who have pricing power? So by definition they want companies who can raise prices more than their competitors.
If anything, the outcry against that shows that the strategy is not sustainable. There is the loss of brand value associated with the strategy (which can be calculated down to a monetary value). That loss of brand value (both of the company and its products) and popularity is an extra cost associated with the strategy which decreases its profits. Thats why VRX and many others are backing down from that, as they should.