actually, i think this is brilliant.
basically it allows nikon to use the same tech for two different segments and imo that really puts price pressure on the competitors.
if you're a pro, you might pay the extra 1.5k to get the dual card slots that can keep up in backup mode and the improved thermal management. if it makes you money, that 1.5k isn't a huge gap.
but you can give the same basic tech and performance to the prosumer for much less who maybe doesn't need that thermal management and is more price sensitive. and this last price thing really looks substantial when cross-shopping other brands who are going to make you pay more to get into that space.
and of course, nikon already put price pressure on the competitors with their z9 design approach (the z9 is $1k less than the a1).
so basically the prosumer can have an a1 at 6500, or a z8 at 4000. that's real pressure.
and there is a development cost benefit for nikon having the same processor in multiple cameras from a software perspective.