"If you can't dazzle them with brilliance, baffle them with bullshit"
If you present your paper "Healthy men who engage in a well rounded exercise regimen live longer, healthier lives" everyone is just going to go "well duh."
People in this literature will not have any problem understanding the jargon used here, and it's all meaningful, so this isn't at all a case of "baffle them with bullshit."
You almost certainly use some kinds of technical jargon at your job, there is no need for this weird anger about research scientists using jargon in the same way.
"Well duh" does not count as evidence for a claim, and the claim wasn't about a well-rounded exercise regimen but was rather more specific.
Have you ever read an explanation of a compiler or concurrency using only the 1000 most common English words? It can be done (and I wish I could find the link), but there's a reason we don't talk like that, and neither should scientists.
I think it's a great exercise--you will learn something if you try it. But you lose so much precision, and you wouldn't want to make that your normal way of speaking.
You do. Using a language that only other scientists like yourself understand is a way to prove that you belong to that community and that the unwashed masses need to fund your research further because it's obviously serious stuff that mere mortals can not begin to comprehend.
The people from whom you would get funding would understand the technical jargon of the field. Nobody is getting funded just for being so confusing that nobody can understand.
You'll never get follow-up funding with a title like that.