Yes, our election systems could be compromised by foreign (or domestic) attackers. This is something we should all fight against. I don't think any voter would agree that our votes shouldn't count. Computer security is hard and the companies running and making voting machines have time and again been proven incompetent. We should work to fix that.
The separate issue is that in our two party system it's come out that one party was proven to have worked to influence an election for one of the candidates of that party. Sure, Bernie was an outsider. Sure, Hillary was practically anointed from the start. Sure, it was fairly obvious that the DNC was favoring HRC and working harder for her than for Sanders. But there's actual proof now. If it came from a lone-wolf domestic hacker, or from Snowden, or from Putins own laptop I don't think it matters. It matters that it happened and the people need to know it did. No media is talking about that at all. Not even NPR.
I think any organization that's working to get someone elected by the people, in order to work for the people should want it's emails to be public. Why wouldn't it want that? Why shouldn't the media have the option to investigate and shine a bright spotlight on everything regarding our elections? They just had this opportunity and they're wasting it to instead talk about Russia influencing our elections. Since we're internally influencing our own elections maybe we should worry about that first.