Why was the Photo-Secession named after European secessionist art movements?

The Photo-Secession was named after the avant-garde secessionist art movements that emerged in Germany and Austria during the 1890s.12

Much like these European counterparts, the American group—led by Alfred Stieglitz and including Edward Steichen—adopted the name to signal their intent to break away from what they viewed as stodgy, conventional, and outmoded ways of thinking about the arts. By choosing this name, the group emphasized their commitment to establishing photography as a recognized fine art, distancing themselves from the conservative standards of established organizations like the Camera Club of New York.123