We all know that console is plagued by duping. I'm not going into how it is done but it requires a server hop as part of all of them.
The fix is simple. Disable server hopping.
You should not be able to switch servers with your character and regain any loot. When playing community servers you begin fresh with each different server you choose to play. If this was the same on official then it would end duping instantly as well as server hopping for a better spawn and also put an end to 'raiding group' that post online about bases and then go there with no intention to play the game other than to destroy and move on. If you are raided it should be by someone still on the server to get revenge. This is a major issue on console.
With the 1.19 update having the new bunkers, dupers will all move in and build stopping anyone from getting any good loot. Players will also be able to access level 3 solo by using alts and then simply server hopping away back to the spawn areas.
Maybe also make it impossible to build inside or log out inside as you could just farm loot then server hop away.