The fact that you made incorrect assumptions about my skills and those of others who have faced discrimination just shines the light on your own ignorance and lack of compassion.
At the time I didn't say anything about you specifically but now I can say you have poor reading comprehension. This is just one of dozens of posts complaining about the list of perceived grievances going well beyond just {old} and the use of the plural "posts" along with that larger list clearly referred to the larger collective.
If you'd been an employee, customer and shareholder and were dragged into cleanup teams where the fix to development costs were worse than 20:1 you'd develop a well informed lack of compassion for the people who wasted employees' time and the customers' and shareholders' money. When management from VPs on down were saying "we know quality is getting progressively worse but we have to keep making the same mistakes [forever] until every problem is fixed, then we can look at how to improve things" and engineering really did keep making the same major mistakes they're in a realm of insanity that most companies couldn't survive and it appears that cost is finally catching up with Cisco.
Age discrimination is illegal.
I've seen rampant age discrimination against the old and the young my entire baby booming life. As has been noted in many threads, if you file a claim expect every company which does a background check to toss your application.
People get upset when they are told they are doing a great job, and are valued...only to find out months later that they were being tricked.
The quality metrics speak for themselves. I've seen a rare few individuals do some awesome things but in aggregate they've been totally drowned out. Even if your manager loves you any of the management above them can still kick you, your team and your manager to the curb if they have other favorites to protect. The same goes for promotions where people who have cost the company tens of millions in bad decisions still get the win or bonuses where a weak manager just won't have much of a pool to spread around to their reports. Most of these political problems occur everywhere, it's just a matter of degree.