I think you can accept that corporations have responsibilities beyond maximizing profits, and still find criticisms of tax minimization to be misplaced.
There is nothing inherently ethical or unethical about paying more or less taxes. You should pay the taxes you owe, but the law is what tells you how much you owe. Here, for example, the United States believes it should collect taxes on profits a U.S. company makes on sales in Europe. While that is itself dubiously moral, that's the law. But how can it then be immoral to take advantage of Irish tax laws--which Ireland deliberately adopted to encourage companies to move IP and skilled workers to Ireland--that is also legal under U.S. law?
There is nothing inherently ethical or unethical about paying more or less taxes. You should pay the taxes you owe, but the law is what tells you how much you owe. Here, for example, the United States believes it should collect taxes on profits a U.S. company makes on sales in Europe. While that is itself dubiously moral, that's the law. But how can it then be immoral to take advantage of Irish tax laws--which Ireland deliberately adopted to encourage companies to move IP and skilled workers to Ireland--that is also legal under U.S. law?