The danger of the argument put forward is to confuse 'experience' with 'wisdom'.
We all aquire experience simply by living our lives and learning lessons as we go along, and extend our ability to think beyond ourselves and our immediate future.
To suggest that wisdom is aquired at an equal rate, and by everyone, simply by living to an older age, is farcical.
There are a large number of old people who have learned nothing from their time on earth, and a large number of young people who have learned far more than people twice their age.
Wisdom is a combination of intelligence, willingness to learn and apply knowledge, and a deep seated ability to see all points of view.
Experience is gained by living in the world, and not necessarily understanding anything that has happened, ever.
The two are poles apart, and the difference is very very important.
As you are advised regularly AOG - being an older citizen does not convey the automatic right to assume that your version of events, or your opinion thereof, is the definitive version. Experience is not wisdom.