I always take this articles with a grain of salt, carbon dating is considered by many to be a joke. We really have no idea the time line past 4k years...
But we cn and do have the stratification present in a site to establish that the lower strata are older than the ones above them, or we can see the disturbance which led to the inversion or penetration of layers.
Carbon dating is most accurate in strata which antedate nuclear explosions, and best when verified by other means.
There was a corridor for migration at around 32000 BP, and it is highly likely humans migrated along it.