linux for beginners

Hi guys. please tell me, what would be the problem if you could run a custom function from a kernel module? if not from the kernel module, then from where? or do you think that user-defined functions are not needed at all in Linux? Then what kind of freedom are you talking about? all these cries that Linux was created for those who want to do something themselves are just women's chatter. why is a simple user deprived of the opportunity to write code and run it from the kernel module? Security? by default, you have all ports open. you can create rm-rf* and break the whole system, but you cannot run the function from the module. that is, if a person is able to write code for a kernel module, if he can compile it, then do you think that he is not able to understand what he is doing, and he should be forbidden to do so? I just want to understand why you are preventing beginners from getting used to the Linux world faster? Do you want to feel superior and smarter than them? What is the real reason?