First of all the question asked is not pointless, and bears no resemblance to coloured string, the question is valid, read this link
https://jmvh.org/article/load-carriage-and-the-female-soldier/
If it is important for the British Army to investigate then it must be an important subject, If you think it is a stupid question, why bother getting involved , and trying to answer it with your coloured string analogy, and why refer to the BCUK playground, this is a forum, and a forum is a vehicle for discussion to take place, there is no such thing as a pointless question, because the person posting that question is either wanting advice, or wants reassurances to his own point of view on that matter.
When people express their view on a matter, and occasionally bring to light their experiences, why should they be belittled?
Better to say something rather than nothing at all., unless what you are about to say has little relevance, and is just a gripe.
I enjoy this forum, I enjoy reading the points of view of others, but each discussion, there is always someone who comes in and starts to drag the discussion down and those who have contributed to it, Why?, if you don't like what's being said move on, Don't spoil it for the rest, if you don't agree on what's being said, then relate your point of view on the matter in a factual way.
Just don't make it personal.