[ANSWERED]Is this normal/accepted?

Hello, I joined a random heroic through the group finder, it was Halls of Lightning. The tank announced, that he wants the axe from the last boss and asked if we are okay with that. Everyone said yes, but I noted that I also need the axe, we can just roll for it (as in, both of us rolls need on the axe). The tank got angry and started insulting me, and kicked me from the group. Is this something normal or accepted on the realm that I should get used to? DPS wanting to roll for a DPS item and end up getting kicked for it before the dungeon even starts. It happened on Frostmourne.

https://imgur.com/a/bBCPuAG

If you wish to report a player for unfair behavior you may do so via in-game ticket system.