Shingon, also known as Esoteric Japanese Buddhism, is a form of Buddhism that originated in Japan in the 9th century. It is based on the teachings of the Indian monk Kukai, also known as Kobo Daishi, who traveled to China and studied under the esoteric master Huiguo. Shingon is known for its complex rituals, mantras, and visualizations, and has been a significant influence on Japanese culture and spirituality. However, like any other religion, Shingon has faced controversies and criticisms throughout its history.

One of the main controversies surrounding Shingon is its use of esoteric practices, which some critics view as being too secretive and exclusive. Shingon teachings and rituals are only passed down from master to disciple, and there is a strict hierarchy within the sect. This has led to accusations of elitism and a lack of transparency, with some critics claiming that Shingon is more concerned with maintaining its power and influence rather than spreading its teachings to the general public.

Another criticism of Shingon is its close relationship with the Japanese government. Throughout history, Shingon has been closely tied to the ruling class, and many of its temples were built with government support. This has led to accusations of Shingon being a tool for political control and manipulation. Additionally, some have criticized Shingon for its involvement in the militaristic policies of Japan during World War II, with some temples even displaying the imperial flag and supporting the war effort.

There have also been controversies surrounding the financial practices of Shingon temples. Some critics have accused the sect of being overly focused on monetary gain, with some temples charging high fees for rituals and ceremonies. This has led to accusations of commercialization and exploitation of believers, which goes against the fundamental teachings of Buddhism.

Furthermore, some critics have raised concerns about the role of women in Shingon. Historically, women were not allowed to become priests in Shingon, and even today, they are not allowed to enter certain areas of temples or participate in certain rituals. This has led to accusations of sexism and discrimination within the sect.

In recent years, there have also been controversies surrounding the legitimacy of some Shingon teachers. Some individuals have been accused of using the teachings of Shingon for their own personal gain, and there have been cases of sexual misconduct and financial fraud involving Shingon priests.

In conclusion, while Shingon has a rich history and deep spiritual teachings, it has also faced its fair share of controversies and criticisms. From accusations of elitism and political ties to concerns about commercialization and discrimination, these controversies serve as a reminder that even the most revered religions are not immune to criticism and scrutiny.