Lower resale value on a mass produced and widespread early-gen EV that will not be worth much in 6-10 years?
The last thing you should be worried about on a depreciating liability are headlights - instead consider battery health/degradation, suspension wear/tear, paint, glass, interior state, damage or repair quality.
99% of 2nd, 3rd owners, middle-men, resellers, etc. will not even notice or care for the headlight difference or pre/post refresh changes between earlier/later production 3/Ys.
And as others have said, the newer (doesn't mean better) 'matrix' headlights on these cars are a far cry from headlight tech available everywhere but in the US, given antiquated regulation. Recent changes are a small step in the right direction, but are about 10-15 years late
and will not help headlights designed in mid-2010s.