The above are nothing more than generalizations that attempt to sweep the entire age group or multiple age groups into the same category of stagnant, slow and unwilling to learn workers. In reality, many experienced software specialist are both willing to learn as much or more than their younger peers, and they benefit from their past experience in computer science and other fields. Many older workers are far more responsible and attentive to their work because often have more at steaks - they have families and children who they have to provide for. They also know that if they were to lose a job at an older age, finding a new one would be much harder than to someone who was in his 20's or 30's. Thus, their tend to value their work more than a young hot shot who might be bouncing from one company to another, constantly looking for a better deal.
Age discrimination lawsuits will continue to be filed by employees who feel betrayed and kicked to the curb by their employers, especially in those cases where the older workers are particularly hurt by discrimination because they had a lengthy career at the same company (10 years or more) and they feel they gave so much of their time and their mind to the company.