Reported for winning loot

This is getting stupid now, join a Heroic raid with 2 mates, we kill the boss and I get a whisper offering a VERY low amount of gold for the trinket I won. I believe 90% of the raid was from the same guild on Moonguard.

Ended up getting the boot for not handing it over and then they mass reported me causing me to get a warning.

How is this acceptable. sure no action has been taken it's just a warning but there is nothing to stop this happening again.

Part of the issue is the system but what is wrong with this player base that they think that is okay. They also in whispers said I "stole" loot from them.. I know people are dumb but like come on..

No clue what can change to make it so the system cannot be abused but there needs to be something done at some point to stop clowns like this.