Just considering wearing out of molds and the cost to replace them with tighter tolerances, it makes it feel like there will never be strict standards for the rim and tire interface.

The scariest part of the podcast was Josh's 1.1 safety factor discussion. Whereas tubed tire can withstand 50% over inflation, he found that only 10% over inflation resulted in a blowoff with hookless rims. Tire pressure increases 2% for each 10F rise in temperature. Most bicycle tire gauges are not terribly accurate and virtually none are calibrated to a NIST standard. 10% is not much of a margin.

Personally, I am comfortable riding hooked rims tubeless if the tire fits very snug and does not stretch over time.