I have a nice example of Grok working well: https://x.com/cgt_strom/status/1967577034579947768

Grok provides clear value here: obvious false information is easily countered. You can see how it easily convinces anyone casually looking at this post. Once they see grok's fact checks they usually believe grok - without it they might leave the post thinking the original post was true. This is immense value in my opinion.