CR knives probably are not as impressive as they were 15-20 years ago simply because back then, they and Microtech were the only production knives built with really good engineering, detail oriented manufacturing, and quality materials. Today, the other brands have been able to be more competitive due to advances in manufacturing processes. Then you add the mid tech stuff to the mix.
But, it doesn't change the quality of what CR produces, which was, and is still, top notch.
Everybody is entitled to not like them for whatever reason, the pointy but somewhat slippery studs, the relative plainness of the design, the ergos, whatever. But, the one thing you'd be wrong to say is they're not exceptionally well made, and very consistent knife to knife. I've had knives from most of the top custom makers, some pretty pricey, and frankly, many of them are not as well made and finished as a Sebenza.
Plenty of knives I find more appealing, but better made, and consistently so? Very few. No matter how much you spend.
For this reason, no, I don't think they're overpriced at all.
If you're the type of person who gets warm and fuzzy when experiencing mechanical precision and near perfection, you'll get why the Sebenza is so loved, and you'll think it's $ well spent. If you're not, you might not.