LFR community is horrible

Alright so i went ahead and let my little brother play a little on my account. He decided to que for 2nd part HoF lfr and after 20 min of wait time he got inside and he was so excited. He asked for tactics as he is still only lvl 30 on his own character and has never been before. The raid group started hating on him and his english. He did the first boss and topped the damage meters by spamming 3 4 5 and after the boss he asked for tactics again for ambershaper and people called him a troll wich led to him being kicked from the group.

Just wanted to share my experiences with the really bad community out there.