Bluntly, I think it can help people trying to get help for the first time to make sure they know something that's so obvious to those in the system, as it were, for a while, but that sadly isn't to a lot of people - there are rarely enough resources to go round in official services, so it's competitive and you have to treat it as a competition to win.
This is an aspect of life I've fallen down on and only in recent years come to realise how much I've lost out because of it. I tend in life to ask for precisely what I think is fair, reasonable, my entitlement etc. But that often won't get you what you should have. I'm not good at it, but it's the sort of thing where you put up a fair case for more than you'd settle for, whilst giving the impression that if push comes to shove, you'll settle for less, but that if you don't get anything, you'll be a time-consuming pain in the wotsit.
Thus, if they're good at negotiating, use those skills, and if not, see if anyone with those skills can help them.
Ironically, I think this comes close to something OtE said, and of course I may have misinterpreted him, but whereas I thought he was saying, to paraphrase, we have to just fight for ourselves and that's it, I see it as fighting our own case for what we need, and also doing what we can, little or a lot, to stand with others.
It is, I believe, perfectly reasonable, to fight competitively for what you know you are reasonably and genuinely entitled to.