The physics of a strategic atmospheric bomber hasn’t changed. The B52 is close to optimal in shape for the task.
I mean, the B-1 and the B-21 are also strategic bombers, came out later, are still in the US inventory, and they look pretty different. I don’t know if I’d agree with an argument that the natural convergence is towards the B-52.
I think that a better argument is that the B-52 still effectively fills a desired role better than other options in 2025, but I don’t know if I’d say that that encompasses all strategic bombing.
EDIT: I guess I should really use the B-2 rather than the B-21 for the flying wing example. The B-21 is flying, but not yet in USAF service. I was just kinda happy that I could find flying B-21 photographs.
No, but I have purchased Early Access games on Steam.