sometimes the voids are small enough to be of no consequence, filled or not.
I had some hidden water damage in one of 8 bores, the rest were perfect. Cleaned it up the best I could with a hone and some crocus cloth, arranged the ring gaps to miss the damage and life went on just fine. This was for my then daily driver car.
Perfection is nice to pursue but often not necessary.
If you trust the person doing the holes is knowledgeable enough to know, then by all means go the new pistons again.
Sometimes it's just not a showstopper.
Best of luck whichever way you choose.