Yes, but most flight sims are based on very old codebases. X-Plane has started to change, and Prepar3d too, but I imagine they're so complicated it's difficult

Yes, but most flight sims are based on very old codebases. X-Plane has started to change, and Prepar3d too, but I imagine they're so complicated it's difficult to just do without breaking a lot of things. For the time being, even with latest versions, single-threaded cpu performance is the largest concern in these sims.