How rampant is age descrimination?

More than 1.1 million people aged 55 to 70 will leave the workforce over the summer of 2021. The reason is something called ageism. Many seniors face stereotypes about productivity, lack of flexibility to change, lack of motivation, lack of innovation, absenteeism, and lack of cooperation.
While older people are more knowledgeable and experienced than younger people, they find it difficult to find a job. Industries reported with the most rampant age discrimination are business and finance, technology, marketing and advertisement, hospitality, retail, health care, and energy.