Their covers are generally worse than a lot of indie covers. Whenever I work on covers and am having a hard time, I can always look to them for inspiration.
I wouldn't say Honor Harrington series (space opera) was at all political. Oh it might be, and it's been years since I read it, but if it was conservative/right-wing I missed it. They are space opera and very character driven so the politics barely matter (if at all) to the stories. My take away from a "political" standpoint was probably more of a "female" in a "male" world. Shrug. We are all colored by our own experiences.
Mercedes Lackey doesn't write in their sci/fi line (than I know of) but again I fail to see any sign of political alignment. She wrote one of the first gay characters I ever read (I think I was 12? or 16?).
I've read Eric Flint and (something to do with Mother. And an alien planet) and I do not recall anything overly political about it. There's another sci/fi author from their basket I've read, but it's not coming to me at the moment.
Nancy Fulda has been published by them and I know her stuff is not political. I think, in fact, they may have published the story of hers that was up for Hugo and it is about Autism more than anything.
I don't see it. There's some good authors in that stable of books. Sure, I don't love them all and I do think that Tony W. probably leans towards publishing more sci/fi than fantasy, but I hardly think the entire line needs to be cast in such a light. But that's just me.
Some books need "politics" but if they are recognizable as politics from the real world I generally don't finish them. If they are just world building, well then, they are going to be complex with good guys and bad guys.