You give the concise version to the person who is going to authorise your request. The four paragraph version goes on record for the people that person needs to justfy the descision to, they'll likely declare “I don't see a problem here” without actually reading it which is the intention: they might be more wont to question the shorter version.
My point is, I never encountered this. Literally never. I am not particularly young and it is not even the case that I would work in startups all that much. My friends did not complained about having to write paragraphs essays for stuff like this either.
I am open to the idea that there is some bureaucratic workplace where it works like that ... but everywhere I have experience with, they preferred the short version.