It's 2025, we should be able to use LLMs to adapt between communication styles.
If someone I don't know "hello"s me, my LLM should detect that, suppress the notification, and reply automatically - and then resume notifications and defer to me once non-greeting conversation has started.
Regex is enough of a language model to deal with this, no need for LLMs. On a sane operating system you would be able to suppress notifications with a regex match but most consumer operating systems are no longer sane.
Back in the day of early IMs, some unofficial ICQ clients had anti-spam measures which let you set your own question and answer. Being edgy teenagers, we set "leet" questions, which filtered out the unwantables automatically.
If someone I don't know "hello"s me, my LLM should detect that, suppress the notification, and reply automatically - and then resume notifications and defer to me once non-greeting conversation has started.