Some “Scientists” call primate that walks on two legs as “human”. 6 teeth this time over the one tooth they manufactured the non existent Nebraska man but let us see more than that to come to any major conclusions.
They will take this “piece” of a jaw bone and “construct” an entire skull, skeleton, muscle, skin, skin tone hair etc, and put it on display.
It will be displayed in the “environment” that helps complete the narrative they want to achieve.
Reconstructing an entire organism from a small fossil remnant (or non-fossil remnant, in the case of forensic science) was pioneered by Cuvier, who was a Young-Earth Creationist. So, I agree, not necessarily the most reliable method. Radiometric dating methods are used to date rock strata; radiocarbon dating is a radiometric method, but doesn’t work on rocks and doesn’t date stuff older than about 50K years.