Per Google AI:
Yes, Chad Patrick explicitly stated that he prefers not knowing ahead of time when he is pitching. [1]
The Milwaukee Brewers pitcher explicitly said, “I don't want to know when I'm pitching. I like it this way,” after transitioning into a multi-inning swingman role out of the bullpen. [1]
Patrick has openly dealt with pre-game anxiety and butterflies so severe that they frequently caused him to get physically ill and vomit before and even during his scheduled starts. Operating under the mindset that "short notice is the best notice," he found that not having time to overthink or get worked up allowed him to thrive on the mound. [1, 3]