>Over the years I've learned to a limited extent how to convey ideas without drawing on terminology which most people aren't familiar with, but that has taken decades of practice.

I think this is one of the most remarkable lifeskills to have. Personally, I feel stupid when I find myself between a jargon laced conversation. On the other hand, I respond very well to clearly communicated (not ELI5, but simple) ideas.

Putting things across as simply as possible is very difficult to master IMO.