I will state up front, I haven't read the Navy article, nor have I the ability to at the moment. But, that summary sounds familiar to a number of the bullshit old white man views in RAAC and RAInf.... and as background, I aided the collation of data considering the integration of women into infantry, so have seen most of this before.
I don't know the details of this report, but there is pretty constant engagement with the AHRC and the military over the past 3 - 4 years. I have participated in two myself. I'm sure there are reasons and deeper levels, but the two I was in were simply asking questions about culture. We weren't steered, nor constrained from replying. I actually found them a breath of fresh air compared to some other culture and investigative 'interviews'.
Frankly, anyone who says increased females degrades ADF capability is so far out of date that they are a bigger risk to our overall capability. It is so pig-ignorant, wrong and illogical that I have little faith they could do their actual job in an increasingly complex world. There is significant bodies of work that highlight women in ground forces make understanding human terrain better, that having women in HQ makes for broader (and better) thinking, that women are better for anything that exposes them to G's and that women can think and react more logically under pressure. And not all of them come from the ADF, or even militarises.
Opening up all jobs to women makes the ADF better, stronger, more capable and more resilient. This is an easy win. It will be brutal seeing dead women come home (is it any less seeing young men? Really?) but if people think women won't be in the front line they have no understanding of modern warfare.