True but it's just like with copy protections which still are used and get more and more developed and more and more cause trouble for everyone. So although there is some truth about it even surplus things seem to be staying...

I think the most important thing about the packer is the look of professionality. If you have your ressources packed it has a more professional touch as if you have hundreds of files flying around...

But as you mention "capturing shaders" can you really "capture" that and I don't mean hacking the encrypted file and read out its sourcecode. I've never heard of such a possibility...
Enjoy your meal
Toast