Q: What’s the danger in misusing hyperbole?
A: While we all like to think that our work is unique, essential, and groundbreaking, that can’t always be the case. (I think of the phrase from A Prairie Home Companion, “where the children are all above average.”)
It behooves you as a socially responsible changemaker to get your facts straight and do your research; exaggeration has no place in your writing. You certainly don’t want your readers to doubt your integrity or knowledge of your field if they learn you’re not telling the whole truth.
Of course, If extensive research tells you that you are the only/best/least expensive/most effective/largest (etc.) organization doing your work in the way you are doing it, by all means tell the world about it. Just stay away from claims that seem too good to be true (what a turn-off!).
In all other cases, take the time to qualify your statements. Temper the temptation to go overboard. Look for the unique part of what you do and focus on that distinction — in an honest and clear way. For example, maybe you’re the only one in your geographic area making a specific community change. Perhaps you specialize in a particular population within your larger field. If you are contributing a major piece of the puzzle in your field, but your partners also form part of the solution, take them into account and share the credit.
Keep it real and always be mindful of your credibility.