Ummm, of course it matters.
If there was criminal activity in targeting that's a big deal, I'd agree.
But you keep blurring over that important distinction, I suspect on purpose, by saying the IRS admitted they "targeted" when in reality what they admitted is that they had a protocol in place, to look for key words to screen applications because of the explosion of applications after Citizens United from people abusing the exemption, both left and right. There were more right than left, far more, because that is who was motivated after Obama's election. Naturally, the majority of those screened would therefore be right leaning organizations as they made up the majority of the pool of applications.
If the question is whether there was a purposeful failure to provide emails upon subpoena, versus laziness or incompetence in trying to find them, then that is not as big a deal until they find the former rather than the latter.
Again, I cannot tell from the article if the investigation is into criminal activity in targeting, or criminal activity in not turning over emails or knowingly misrepresenting what was done to find them.
I think to most people there's an obvious and pretty important distinction between them. I get why you would rather gloss over that, however, and just generally throw it all into a hodge podge of IRS scandal. Its much more interesting to claim political targeting than it is to drone on and on about thousands of pages of responses to subpoenas.