Your problem is you don’t understand what intrusive thoughts actually are.

Everyone has thoughts that creep into their stream of consciousness in response to stressors and are experienced as stressful thoughts that reflect a person’s latent anxieties.

Truly intrusive thoughts are thoughts that are injected into your stream of consciousness much more abruptly and reflect a psychotic problem in your brain. They’re often experienced as thoughts that aren’t your own and feel entirely alien to you in a way that the aforementioned thoughts do not. This can result in them being interpreted by the brain as “the CIA is projecting thoughts into my mind via a chip” to “I have a telepathic connection to God” depending on the mental illness in question.

Do not confuse these two things. The former is a normal phenomenon that is not an indication of serious mental illness; the latter definitely is.