How can NLP be ruled forbidden when Islam encourages thought and knowledge, the fundamentals of which are derived from religion?

We are not against sound knowledge based on solid foundations and scientific facts, and we reject knowledge based on fantasies and delusions; the presence of some correct results within it does not validate it. The fatwas that warned against this field of knowledge were issued by reputable scholars and supported by specialists in psychology and psychiatry. You can engage in a dialogue with the psychiatrists who supported these fatwas to learn about their arguments.