@Riot What's allowed in chat?

So lately it seems that im getting the report popup all the time, like every 5-6 games. 99% of what i use the chat for is communicating summoners, where wards are, item spikes for myself and enemies, and who needs to be the focus in a teamfight. Yet people start raging and spewing "report so and so for verbal" in allchat over something as simple as one time saying something like "can you get some wards in (insert location here)" or "dont go so deep, we dont have vision for it"

What good is the chat function if players get butthurt and start raging over the communication needed to play a team game as such, like a team? Im thoroughly confused at this point because of all the warning popups (which i assume are automated?) over simple game related communication

TLDR getting reported for calm game related coms, no clear cut line drawn anywhere on what you can and cant say in game, whats banable and whats not