I am familiar with all the points you made, and I read the bi-directional flying wing paper when it was released. However, I keep hearing that Anka 3 will go supersonic, and TUSAS is working on something. If you look at ANKA-3, it is not a conventional flying wing design. It is a delta wing flying wing hybrid. It looks like a triangle/big single piece of delta wing, with an aggressive sweep angle. An aggressive sweep angle is related to higher speeds. There are surely big questions to be answered, but i keep hearing this from multiple sources, both popular sources and sources inside the industry, that can't all be lying at the same time.
The rumored aircraft is supposed to have a dual engine setup, over 2x thrust and up to %30 increased MTOW. Supersonic cruise target is Mach 1.2-1.3.
Chinese CH-7
B-2 Spirit B-21 Raider
Anka 3