Anyone can make an argument 'for' or 'against' anything. In the end... in cases like this... it comes down to subjectivity or opinion. Since paulwheeler is the one maintaining this particular mod, his opinion is really the only one that matters. If he feels a ship doesn't belong, it's his decision.
I can find points I agree with for and against including it... but the fact is it just doesn't matter what I, or anyone else thinks. Neither I nor anyone else is maintaining this mod. Basically, if you *really* want the ship in SRM, I don't believe it's that difficult to edit it in yourself. Alternatively,you have the choice of not using SRM, and perhaps using Xtra instead.
I gotta say that overall, I agree with Paul on this one. The ship IS awesome looking, but it doesn't have much "alienness" to it. It doesn't look like something a spacefaring bug species would build to survive in space. It looks like something people would build in trying to imitate what a bug might build. It doesn't look "hive" like.
Sure, something like this can be said of EVERY ship, but to me it's just seems very apparent here. And it doesn't seem to follow an evolution in design from previous Kha'ak ships. I'm a VERY new player to this game, but even I can see this. There's no continuation. It's a complete break, and while evolution is good, I personally like evolution to appear to follow a pattern... so that it doesn't look jarringly out of place next to what came before it. In fact, I kind of feel the same way about a lot of the extra Kha'ak ships in SRM, especially the new fighters. Some of the MK 1 ships as well, though overall I like them, except maybe the Ray MK1. Not sure why they were included by Paul. But that's just my opinion. Which as we know isn't worth much.

I'm sure the same can be said for a lot of other ships, but again, it just doesn't matter. If the person maintaining the mod thinks it isn't a good fit, you may be better off trying to find a way to fit it yourself, or switching mods entirely. Raising point after point is just tiresome eventually, because every point has a counterpoint, and in the end only the points made by the person in charge matter.