This is pretty absurd.

First of all, Minecraft is a post-scarcity economy. Nothing aside from maybe diamonds is particularly difficult to obtain with time. The "reward" for killing a player is incredibly low and many communities will take collective action against these crimes.

Second of all, death in Minecraft or video games in general does not in any way have the same connotation that it does in real life. What many authoritative figures fail to take into perspective is that death is simply another game mechanic used to punish a failure state. Besides, unless you die in a particularly punishing way (I.E: void or lava) your items will stay obtainable for a decent amount of time afterwards.

Minecraft isn't like games such as Day-Z where death puts you exactly at square (block?) one. You still keep anything you've built and many players are sympathetic to misfortune. I know I've personally given out iron armor and diamond picks to players on our server who met unfortunate ends. Again, it's not like these materials are particularly hard to obtain.

Minecraft has one of the overall nicest communities on the internet. (Maybe TF2 is better? shrug Irrelevant.) The level of cooperation and international comradery fostered by Minecraft is just astounding. You have not experienced kindness until you have played on a Minecraft server that has a sense of community. Minecraft is a PvE game with some PvP elements that by and large are outright banned on most servers. Anyone who says killing players is the easiest or most common way to obtain resources is sorely mistaken. As if one inventory full of stone brick could actually build something. Hah.

But, y'know. I'm just an American. This is just, like, my opinion, man.