¿Son las herramientas automáticas de evaluación de la accesibilidad web fiables?

El artículo Can Automated Web Accessibility Programs Accurately Determine ADA and 508 Compliance? explica que las herramientas automáticas de evaluación de la accesibilidad web no son fiables para asegurar el cumplimiento de las pautas de accesibilidad web:

Can automated web accessibility programs accurately determine ADA and 508 compliance? According to the United States Access Board the answer is, NO. In fact, the Board advised, in an online training tool from May 2016, 50% of errors are likely to be overlooked with an automatic system. The Access Board further states that an automated tool should be used in web development, but not as a reliable monitoring system.