“Easy reading is damn hard writing.“ — Nathaniel Hawthorne (apparently)* There’s definite value to simplicity in writing. At the same time, like all principles, people tend to run with the idea and misapply it. There are some cases in which your work demands a certain level of precision that’s only possible using complex words or jargon. Not to mention, writing that’s a little complicated can be a lot more fun! There…
Reading that paragraph, 20-30 percent could be removed. Reading for pleasure should be entertaining. Reading for knowledge should be simple/concise.
It can be a difficult balance. You can provide a lot of information in a few bullet points, but there may also be a lot of contextual information left out that leaves more curious readers wondering "why is like this and not another way".