I'd argue that the applications if LLMs are well known but tgat LLMs currently aren't capable of performing those tasks.

Everyone wants to replace their tech support with an LLM but they don't want some clever prompter to get it to run arbitrary queries or have it promise refunds.

It's not reliable because it's not intelligent.

I think autonomous support agents are just missing the point. LLMs are tools that empower the user. A support agent is very often in a somewhat adversarial position to the customer. You don't want to empower your adversary.

LLMs supporting an actual human customer service agent are fine and useful.