Maybe it’s human nature, and maybe Einstein set the bar too high, but he refused to even test his own theories, believing that he would prejudice the results. He left it to others, and he said that, even if his theories passed the tests conducted by others, his theories may still not be valid. he was a scientist.
A real scientist does not set out to prove his theories. he sets out to test their validity, and does so skeptically.
A real scientist is a passionate being who loves his theory and will fight for it because he believes that it’s true. The risk is that he is wrong. This risk is mitigated by the other scientist who is passionately committed to his own theory and will engage in intellectual combat to advance and defend it. Both are scientists. It’s in the friction between them that the truth emerges and advances occur.