IF ONLY DOCUMENTATION WAS IN ENGLISH

In the past I've seen documentation that is great, and documentation that is conspicuous by it's absence.
Over the last decade, I've noticed documentation is getting WORSE.
I believe the reason for this is that those tasked with creating documentation have become so accustomed to the jargon in their own heads that they have LOST THE ABILITY TO COMMUNICATE IN ENGLISH, and as a consequence simply don't bother.
New terms such as "ThingamyJig" are defined as "A Collection of ThingamyJigs" — so you end up going round in circles and get back to square one.
They make little or no effort to provide simple examples.
If only companies who create languages understood that those who wrote the language may not be the best people to write the documentation.