I recognise these scammers. I run a website for a small community group which just has a bit of information about them which has a contact us page with minimal protection. It comes in waves the language is very similar offering SEO and suchlike. I don't allow any of that through to the community because they are mostly non-technical and somebody will no doubt reply.
This scam spam has been arriving since I set the website up (2019 IIRC), well before LLMs became available. Now that I consider it, haven't seen any lately I guess they have a new target.. I'd better brace myself for a new AI generated onslaught.