Pete this is really getting tasteless on your part
Not just Hannity. Newt was talking about this story this morning. Now there are two competing narratives about how the DNC emails came to be published on Wikileaks. One is that they were leaked by Seth Rich, the other is that the DNC servers were hacked by agents of the Russian government.
Now neither claim has been confirmed or refuted by the FBI. They have examined neither Seth Rich's laptop, not the DNC servers. Now we have a situation where the main narrative on the left and in left wing media is that Russia hacked the DNC whereas on the right and in right wing media the Russia story is considered unfounded and lacking in evidence whilst the late Seth Rich is considered a more likely culprit.
Now I don't subscribe the the Russia conspiracy theory myself but I wouldn't say it was wrong to discuss because it forms part of the left wing narrative and is therefore part of politics, even for those who are sceptical of the story.
Likewise the Seth Rich claims, whether you find them plausible or not are becoming part of the narrative of the right and are therefore part of politics whether you agree with them or not.
As for the matter of taste the issue of whether Rich was behind the leak is separate from the question of whether his death was linked to the leak. The two things may possibly turn out to be linked or they may very well not be. I have offered no speculation on that.
