Issaac,they warn because they are doing a fine work in protecting us. A parent warns regarding crossing the road, whom to mix with at school etc....if someone talks badly about their parent they wont listen...likewise anything thats said against Jahs org is indirected to him also..its saying he doesnt have the power or wont deal with things,he isnt given the faith he without doubt deserves.
The apostle paul warned of many who would try to misled....the gb are doing likewise yet they are attacked just as Paul was. History repeating itself and satan using the same tool...but Jah has tools too and each and everyone of us needs to see what tool we are. My love for Jehovah and faith is immense, satan is clever but Jah is wise and powerful. :)