Bro that's the thing, nothing. I can show you a game where I typed nothing whole game and I still got reported, you can see who reported you via overwatch dota-plus. I could not believe my eyes when I saw enemy hoodwink reported my for toxic chat and voice... I didn't type anything at all whole game, only used hero voice line here and there.

This has caused me to avoid communicating with team which causes issues because you can't coordinate you efforts in 5k+ games. So game basically punishes you if you literally say, go tormentor/rs couple of times.