Chirality is either an underlying property of biological life, or an epigenetic (so-to-speak) result from having a Spinning Something and then throwing Life into it. Reality itself could have a spin or orientation and therefore Biological Life would be subservient to such. In my opinion long-term adaptations have about as much pertinence to chirality as it does to magnetism. Either it turns or it doesn't, it doesn't slowly decide to over millions of years.
All evidence we have is consistent with a "world being present before living beings inhabited it".
Therefore the hypothesis is not disproved, which is all science ultimately says about facts.