Remove hook not triggered when removing documents

The pre/post hooks for remove are only triggered when using the document instance’s remove() method, not when the model’s methods are used:

var mongoose = require("mongoose");
var db = mongoose.createConnection('mongodb://localhost/experiment');
db.once('open', function(){

  testSchema = new mongoose.Schema({ title: String });
  testSchema.post('remove', function(removed){
    console.log('removed', removed.title);
  });
  var Test = db.model('Test', testSchema);

  // > "removed A"
  new Test({ title: 'A' }).save(function(err, created){
    created.remove();
  });

  // Nothing :(
  Test({ title: 'B' }).save(function(err, created){
    Test.remove({ title: 'B' }).exec();
  });

  // Nothing :(
  Test({ title: 'C' }).save(function(err, created){
    Test.find({ title: 'C' }).remove();
  });

});

[ramseydsilva]

This is how I got around the issue:

Post.findOneAndRemove({'id': data.post, 'user.uid': socket.handshake.user.id}, function(err, post) {
    post.remove();
});

models.js

postSchema.post('remove', function(doc) {
    console.log('removed');
});

// prints 'removed' once

The remove hook is not fired on findOneAndRemove, however, it works when I call remove in the callback

[JXBAR]

Ok but Why ? iam sorry i didnt get why the hook is executed on Model.remove() and not on Query.remove(). Now why should i use the hooks if they arent called everytime ?
what’s the use ?