We have an open plan office with two or three exceptionally loud/annoying developers and yet the boss refuses to allow anyone to wear headphones as it is 'unpro

We have an open plan office with two or three exceptionally loud/annoying developers and yet the boss refuses to allow anyone to wear headphones as it is 'unprofessional'. He also refuses to allow plants in the office because he doesn't like plants, and loses his shit whenever he hears any talk of unions because unions are 'communism'. I'm currently looking for other opportunities lol.