I've seen a lot of people on here be teased for difficulty expressing themselves. Either people complain "you're using big person words to describe mundane things" when they're aiming for precision or "woah, we don't need that damn wall of text" when they're aiming for clarity. It's like people just want to complain.
There are many quotes that describe this phenomenon:
"Not that the story need be long, but it will take a long while to make it short." -- Henry David Thoreau, 1857 [1]
I picked that version because it was short. In other words, it takes time to remove superfluous text, something that takes practice. Previously I found that Xitter character limit helped hone the skill.
I have written a weekly podcast article about the hobby of amateur radio for 13 years and I've learnt that the better you understand a topic, the more concise you can formulate your thoughts.
Einstein put it like this: "If you can't explain it simply, you don't understand it well enough." [2]
[1] Source: https://quoteinvestigator.com/2012/04/28/shorter-letter/
[2] Source: https://www.socratic-method.com/quote-meanings/albert-einstein-if-you-cant-explain-it-simply-you-dont-understand-it-well-enoughLong is fine, as long as it's broken into paragraphs. I'm not gonna parse a wall of text.
I don't think poor clarity is tightly coupled to vocabulary. Poor clarity often comes from extra words and poorly organized text.
"John walked to the grocery store"
vs
"The man known in his building, but not throughout the entire city, as John, took it upon himself to walk the winding streets of Brooklyn on foot until he reached a open storefront that sold mostly, but not exclusively, groceries"
The latter is pretty limited in vocabulary but is a mess.
People just being people, sometimes crappy-pants, sometimes a friendly nettling.
Post how you post and let the comments flow past you, around you, through you. Then post again.
This varies from person to person and from context to context. So inevitably when someone online writes in one style, someone else will prefer another style and maybe even complain about it.
Just try to be tolerant of other people to a reasonable extent and whatever way you write is fine.
Someone writing a wall of text when it is not asked for or appreciated may be being insensitive to their audience. On the other hand, I've literally had people ask for it and then someone else steps in to complain, so definitely there are Karens who feel entitled to whinge no matter what you do. Just settle in your own mind whether you are doing the right thing, and let being correct remain your guide as to what to do.
There is always the Wikipedia style link to the definition whenever such word arrives. This is what browser tabs are for.
It sounds like a strange scenario. You can write a lot of text but not make it precise?
I'd say it's better to have it short and precise. It gives you an opportunity to study the details and learn while the long text sounds like it could be more open to interpretation and confusion
