"really militant BFs feel they shouldn't try and get FM as close to BM as possible"....I have never, ever heard or read that view anywhere.
This is another example of the 'straw man' argument - 'I am sick of breastfeeding supporters who want to force women to breastfeed' or 'I am all in favour of breastfeeding but I really think people should stop saying formula is poison'.
I suppose there must be someone, somewhere who thinks like this. But they are unpleasant, few and far between, and I have never come across them! And I do not need to get out more.
Several (NCT, Baby Milk Action, Baby Feeding Law Group) breastfeeding support organisations have as policy a goal to work for safer, healthier formula feeding. So, for example, if added ingredient XYZ in Brand X baby formula milk is useful, then it should be in all formula brands.
There is a debate about how to ensure mothers' choices are informed and supported; there is a debate about how not to let mothers down when they switch to ff because bf is unhappy/ineffective; there is a debate about how to ensure formula feeding is safer; there is a debate about how to build mothers' confidence, however they are feeding....and so on. So there is plenty to discuss, OP :)