Input Latency, Modern Handhelds, and Run Ahead

With some of the newer dual screen, or just overall powerful, handhelds coming out- a lot of observation is being made about the input latency of the devices.

I am certainly not going to dispute some very good observations backed by measurable data, the latency exists, and it exceeds the original hardware, sometimes significantly.

However this is a problem that existed in the early days of emulation as well, and the solution was to tune in run-ahead for that specific system/emulator [1].

Is run-ahead not viable for these systems, am I missing some development (or lack of development) in the field of run ahead that made it not viable for addressing input lag?

[1] https://docs.libretro.com/guides/runahead/#