As Glenn Greenwald of The Intercept reminds us, "Governments do spy on each other and do try to influence events in other countries, certainly the U.S. government has a very long and successful history of doing exactly that.". So hearing Americans, particularly Democrats, complain about Trump's request here reminds us the US has unclean hands and about far more important things than distracting us away from the ugliness the Democrats apparently sic on each other to win political races. Some of that increased ugliness includes voter shenanigans (possibly voter suppression) to make it harder for would-be Bernie Sanders voters to vote in the Democratic primary, collusion with news outlets to suppress unfavorable stories, and possible illegality from the DLC. These strike me as far more interesting considering the veracity of the DLC emails remains unchallenged.
The last thing the Democrats really want is people thinking about Hillary Clinton's voting record, or campaign funding sources. That analysis won't go down well with anti-war, pro-universal health care, pro-organized labor, anti-fracking, anti-TPP voters the Democrats seem to be losing. Such discussion might lead these voters to notice that the Democrats are apparently as interested as the Republicans in using a distractionary fear-based campaign against the only competition they're willing to admit to (no talk of Greens or Libertarians, for instance, people might defect or demand inclusive debates).