Is there a fundamental reason/limitation, such as $P \not = NP$, that prevents computers from being able to do mathematics (proofs, etc.)?

Question

I'm a student, so I apologise if this is an idiotic question: Is there a fundamental reason/limitation, such as $P \not = NP$, that prevents computers from being able to do mathematics (posing conjectures, proofs, etc.)? Why or why not?

I have heard arguments that computers will never be able to do mathematics close to the ability of humans, and these arguments are sometimes justified with reference to P vs NP (assuming that $P \not = NP$). It is said that, since these problems are NP rather than P (?), the solutions (proofs) could either be so lengthy as to not be understandable and/or verifiable by humans, or the solutions (proofs) would take so much time that the task practically becomes impossible. Are these statements true? Why or why not?