It does not worries me at all.
When you look on the reasons why they want to do it (to chop heads), then it is only natural to have such thoughts.
But what they do not know is that such thoughts are hindering them to enter the 'astral' realm, and they only go to their dreams which became semi-lucid.
There is no better gatekeeper but your own thoughts, the more helpful you are intended to be, the faster you will enter.