Seems some inter-mixing of issues going on here.
Two mid-air collisions within a short period of time thousands of miles apart involving two very different types of aircraft does not a "Trend"....make.
Invoking possible latent problems with the advent of a new more complex type for training without any empirical evidence to substantiate that also seems a stretch.
What should be part of the discussion is what similarities were there in the two accidents and then assess those for how that might have been caused by the current tactic,,training (both in the particular aircraft and in flight operations at night.
Some thought might be afforded how training areas are controlled re traffic separation and spacing.
It also goes without saying that the individuals involved in these tragedies and their level of training, currency, and proficiency should be reviewed.
Harken back to the mid-air collision of two USMC CH-53's off of Hawaii and what the results of that Investigation revealed.
Any. commonality between that one a nd these two beyond all three involved collisions between the same type of helicopter (meaning two 53's, two UH-60's, and two 64's) colliding during training sorties.
Did the Safety Stand Down result in concerns of the good folks at the level of where the rubber hits the road make it to the top of the Totem Pole or did the NIH Defense (Not Invented Here) stop those concerns being heard at the most senior levels?