This.

Being "reported to HR" doesn't mean "almost got fired". It likely meant a meeting where someone explained "hey, the way you communicated that caused some upset, let's discuss better ways to handle that situation next time." Very often in larger companies, complaints about things like "this bigwig from this other group jumped all over us" are automatically sent through HR because HR has staff whose job just is resolving conflicts between people and keeping things peaceful.

FWIW, it can also mean a meeting where HR says to the complainer: "Are you good, dude? Why are you complaining about this? This is perfectly normal workplace behavior. Stop wasting our time."