The audacity of saying this:

You may have heard that it’s no big deal to port your code from one architecture to another. However, porting takes time and money. It’s a complicated, intense process. Plus, ARM doesn’t run every software program out there, so when you’re ready to add new functionality from Intel, you’ll be stuck with the limitation of ARM and the long-term cost and hassle of managing multiple code bases.

Then turning around and fabbing riscv cores is pretty sickening. If I was at SiFive I would be unenthusiastic about having Intel as a partner.