As you said "Vanilla Minecraft commands done by operators will always log in chat to other operators", I feel like this is wrong. As soon as that gamerule is set to false, it will disable sending command feedback to any other operator on the server.
As you said "Vanilla Minecraft commands done by operators will always log in chat to other operators", I feel like this is wrong. As soon as that gamerule is set to false, it will disable sending command feedback to any other operator on the server.