I understand the want to use nice words, I love using them, but when in the company of people who appreciate it.

But language is use to communicate, if you use words unknown by most you may as well be speaking another language. Imo

And why not use layman terms when speaking to the general public? I assume you know that most people don't know what verisimilitude means.

I have only heard the word verisimilitude once, and it was a Norm MacDonald joke, along with the word sesquipedality.