Very little clipping compared to what? My current glamour clips with itself. My Hroth friend can't wear high collars because his hair clips through all of them. Several of the Viera hairstyles clips through their shoulders even in an upright idle pose. I'm constantly changing hairstyles and shuffling outfits around to minimize obvious clipping.
Like don't get me wrong, most of it is pretty minor and something I can overlook or ignore, but that doesn't mean it's not still there. The very bad, very obvious, very egregious clipping is what's rare. Like that princess dress that eats people when they sit down lmao
I'm also not actually encouraging modding. I'd just like SE to loosen up whatever standard they're using to decide how much clipping is too much to give these two new races more options, and I don't think clipping is a great excuse when they already allow a fair amount of clipping.