Phone [Q] Why no exekernel for now?

I was forced to buy an s5 full price after my 2 year old s3 finally gave up life due to the stuck faulty power button. But I was there in the beginning of the verizon s3 days when there was no root method for it. The way around it was using an exekernel until it was finally figured out and root was achieved.

2 years later I'm back in the same boat with the same 2 companies hoping someone can work magic. I don't learn well. But I'm curious why this is not an option like it was with the s3, does it have to do with knox vs binary counter?

If I had better teachers or someone to learn from I'd learn to code and would help try and figure this out too, but I'm a dumb fuk noone wastes their time with so I'm stuck throwing bounty at people.