But that’s completely missing the point.
The speculation of evolutionary theory suggests that changes in genotype lead to changes in phenotype, and the only way to prove it scientifically is to produce at least a written description of those changes. The changes you mention are not positively linked to changes in phenotype.
Not only are we unable to describe what specific changes in genotype mark the difference between habilis, erectus or sapiens. We have no evidence of what supposedly came in between.
If habilis evolved into erectus, according to Darwinian theory it was a very gradual change, one random mutation at a time.
This means the phenotypic changes would have been very small over a long period, and that the generosity of chance would have necessarily provided the fossil evidence of the in between species. I don’t mean 50% of volume, but 50% of variety. The absence of variety applies across the board to every kind of animal—the fossils just aren’t there.
Yes let’s just keep moving that goal post, and ignore the mountains of supporting evidence. You can deny history all you want but that does not change the facts.