That looks like over-tensioned spokes to me
Asymmetrical damage like that is actually a good sign of under-tensioned wheel flex / dynamic failure. The margin of error between static failure and wheel flex failure is smaller the larger the axle load is though.
how many miles on those wheels? Curious if rim wear contributed to failure.
A few thousand, mostly dry weather. No significant wear.
brass nipples on three or four of the spokes deformed and pulled through the rim preventing rim damage.
Damn... I would definitely consider replacing that rim unless it's a steel rim. Solid brass vs an aluminium hole... There's no way that rim is unharmed.