Random Hostility

[Silaryn]

The SAM's hostility wasn't random.

"neither does half the people who play frontline" is vague. It can be interpreted as you reassuring the SCH but it can also be interpreted as you complaining about and putting down your teammates. The SAM interpreted it as the second way and decided to call you out. To them it looked like you were complaining that people didn't know how to play Frontlines when you yourself didn't know how to play.

Basically, I wouldn't worry about it. You did nothing wrong. The SAM did nothing wrong (in my opinion). It was just miscommunication. It happens.