It uses __method__ lookup as callback name instead of __callee__.

As described on stackoverflow, there is a difference:

method looks up the name statically, it refers to the name of the nearest lexically enclosing method definition. callee looks up the name dynamically, it refers to the name under which the method was called. Neither of the two necessarily needs to correspond to the message that was originally sent:

class << (foo = Object.new)
  def bar(*) return __method__, __callee__ end
  alias_method :baz, :bar
  alias_method :method_missing, :baz
end

foo.bar # => [:bar, :bar]
foo.baz # => [:bar, :baz]
foo.qux # => [:bar, :method_missing]

Thus, under __callee__ lookup the aliased DSL method like

class MyClass
  include ::AfterCommitEverywhere
  alias_method :aliased_after_commit, :after_commit
end

MyClass.new.aliased_after_commit do
   # some useful stuff
end

will land as :aliased_after_commit handler to the Wrap instance, so will never be executed within Wrap#committed! method.