What happened to plain English?

When did the English language slip away? was it last night while I was asleep or years ago?
Your probably wondering what on earth I'm babbling on about, I'll explain.
We seem to have lost the English language, now people talk "tech speak" this recent report says it all.
Hampshire Fire and Rescue Service said it attended a "high impact crash", and said the incident was understood to have happened "at speed". All that from a plane crash, why not just say the fire brigade attended a plane crash, why do they need to be called a "fire and rescue service"? We know they rescue people, indeed they always have, even before they were called a fire "and rescue service". And why a high impact crash? what bloody wrong with the words plane crash?, we can guess it's lightly to involve impact, things falling from the sky often do, something to do with gravity I'm told. Then we have "at speed", do planes fall out of the sky slowly then? No I didn't think so either.
If you read their report you'd be hard put to know a plane was involved, yet I personally think it's a fairly major part of the story.
Can we please get back to plain English,.