umm excuse me ? since when do you have the authority to tell another person what they believe, what they feel, what their thoughts and intentions are, and what their beliefs are, and whether or not they are joking about something ?
every single person is different and unique and has a different and unique mind and way of processing stuff, what makes you think that you have the right and should be taken seriously when you are trying to invalidate what someone else is saying their experience of life and their inner truths and beliefs and intentions are ?
who are you to decide what is true and what is false about everything that they say and expect them to take you seriously ? It is not your place or your right, only the person in the mind of that person knows what they genuinely think and believe and feel and what they genuinely have believed and thought and felt their entire life you are responsible for yourself and you cannot control anyone else or dictate anyone else's experience of life and beliefs for them
^ learn to accept this, because you have serious issues if you cannot