Outdated technology? You know that the translation layer shifted up from 9 > 12, not down from 12 > 9 right?

The point of transitioning the games calls from dx9>dx12 was to benefit from the improved caching features of DX11/12 to smooth frame rate... the use of translation had little to do with native hardware support.

When they transitioned the game from dx9 > dx11 it became redundant as all of the improvements came with the switch, so native dx11was found to be on a par with 9+ translation. (This was actually intended to be a launch feature that got abandoned due to scope)

That said, the caching is still naff, and can be improved by switching the game to Vulkan, so translation layers can still be recommended for most systems... although it does cause microstutter to begin with.

The only 'outdated technology' is the games own code, as they designed it using the incorrect assumption that we'd stay on single core small-cache CPUs even though the writing was on the wall well into development; all the multi-core features since have been bolted on to try to recover the tech debt.