https://photos.app.goo.gl/vSWiPaYprUVdRL2k9

So it is explained in the video shared, that if you are out of range of the block, and hold the "Mine" button, you can insta-mine when walking or running while looking at a single row of blocks that are stone related (as far as my testing goes). This affects but is not limited to:
Stone, cobble, andesite granite diorite, their polished forms, and likely more. This affects worlds with and without cheats.

This happens with and without beacons. It does not work for efficiency 1-3.

There are times Iron has been able to be insta-mined but it seems that it either doesnt work or i dont notice it not working.

If this is fine on public, feel free to change it around, but since this may be an exploit, im just putting it as private