You are free to support this behaviour, but other people should be free to criticize and reject it as well.

Criticize what. What is this behavior to be criticized, this horrible practice of 'giving money away'? Or is it the incredibly stupid-sounding strategy of 'manipulating people into giving you money by giving away money'? Do you seriously believe that telling people you're giving away millions of dollars to charity is going to recoup them anywhere close to that money in sales? This isn't a $1000 dollar giveaway from your local radio station; they are giving away a percentage of profits. At 25% of profits going to charity, they would have to have a 33% increase in sales just to make their money back.

There are people are doing good in this world by giving away large amounts of money to charity and here you are shitting on it, trying to convince others that it is evil. I think that kind of behavior should be rightfully criticized and rejected, not giving money to charities.