I don't think it necessarily addresses that concern, but Machine mode might be the right place to address the concerns which ME addresses on a RISC-V machine; which means that it's at least more likely that it'll be programmable on whatever machine you're looking at.
Just a thought though, it could really go any way. The nice thing though, is that you'll have more than two vendors, which means that the niche of PSP/ME paranoids may be large enough to address for a smaller designer, or through a limited run of licensed design (like SiFive's).
I'm one of the paranoids. This is one of the main things I'm hoping for. Is there any indication of what price point such chips might be offered at? I have no idea how much it costs to set up fabrication, etc., but it seems like ARM chips have done very well.
Just a thought though, it could really go any way. The nice thing though, is that you'll have more than two vendors, which means that the niche of PSP/ME paranoids may be large enough to address for a smaller designer, or through a limited run of licensed design (like SiFive's).