I hate to break it to you, but most people don't have a compelling voice, and they don't have a cohesive world view, and they typically fail at connecting with others, especially if they're schlepping around on LinkedIn trying to social-media-post their way to a job or networking opportunities.

Also there are so many folks, especially on LI, who don't even have fluent English, or decent grammar, and therefore behind the filter of an erudite LLM is an excellent place to stay, pull some levers, and plop out some really compelling word-salad.

That is just the way of the world today. Whether people are doing minimal processing, through SpellCheck or Grammarly, or just prompting an LLM to generate walls of text, they're using assistance to actually find their voice, or filter their own weak voice through something that will win friends and influence more people than they ever could on their own.