I already notice LLM speech patterns in people that use them a whole lot. If you speak more than one language I recommend talking to LLMs in a language that you don't use when speaking to people.
I have a tendency to switch between different languages when interacting with LLM depending on the language of the most likely sources the LLM will pull. It's interesting because the llm speech patterns vary from language to language. And I am much faster at noticing LLM generated text in English (which I use 70% of the time) than in French or Spanish.
In Greek they are still atrociously bad, still feels like they translate an English thought. Nevertheless, the etymological insights they can give on words or Ancient Greek passages is making reading the ancients really fun.
The most frustrating one is when it does the papering over analysis and adding pushback to seem helpful. No, there shouldn't be a spot "where you pushback" unless it makes sense and responds to someone's concern!
Like with an LLM I would rewind the conversation. What do I do, shame them?