combat trousers - and you can use pretty much anything else as an example - are funtionally acceptable, and freely available. civilian walking trousers - and if you can find a pair under £25 or so that are better than a pair of combats i’ll give you a lollipop - are not free.
about 25% of the cadets on my sqn have real problems funding school uniform, at least 10% of the cadets in my sqn come from homes where there is no central heating or more than a days food in the house.
its also about 40 miles (two hours by car, innaccessible by public transport) from my Sqn to a sports direct, rather more to a Go Outdoors, and vastly further to a Decathlon.
so, with absolutely no respect whatsoever, you can emphasis off with your ‘combats are crap, you should buy X, Y or Z’ attitude.