I haven't seen any indication that it isn't a 3.0.0 thing but at the same time, never say never.
Its just that even his exploit can and will be patched the moment its made public, and with the downgrade protections its ultimately just going to be back to the same problem as most people are still not in the scene or paying it much attention.
As for the RA porting, well early work is still an opportunity cost. If you think your time is better spent elsewhere with more immediate returns, you'd pursue that venture over an uncertain one as the opportunity cost is simply not favorable to the latter. I imagine this is their main concern on their time and, from the quote discussion, that seems to be the general gist of their current hesitance.