Eh. Does anyone actually care who a paper endorses any more? I can understand why the papers aren't doing it. It's downside for them, because it makes them look partisan and alienates some potential readers. And the upside?
I mean, the reason why newspaper endorsements mattered in years past was the lack of information. People got their information from the newspapers. If they didn't have time to read the newspaper all the time (or couldn't read, or couldn't read English well, etc), they would count on the newspaper editors to be informed. Hence the endorsements that mattered. There were all sorts of gatekeepers whose endorsements mattered in yesteryear. Hell, a union endorsement used to bring virtually all of the members with it.
In today's world, newspapers don't have that role, or that cachet, or anything special that would make their opinions useful. I mean, who is saying "I'm on fence as to who to vote for. Let's see what the LA Times says about that"? Nobody.