There are only two categories of skills/abilities. First, things that older people are better at, and are legitimate business concerns. Second, things that older people are worse at, and are not legitimate business concerns. There are some things that some people put it one category, and others put in another. E.g. tolerating technical debt, knowing the latest JS frameworks or accepting longer working hours or higher risk.
Total agreement is not needed on which skill goes in which category. What is very important is that you don't try to assert that there is a third category of things older people are worse at and are legitimate business concerns. That would be ageist and invite downvotes.
The proper flow seems to be: have experienced people who are better at strategy mentor inexperienced people who may know more modern tools and are better at immediate tactics (regardless of age), then over time the inexperienced people grow to become mentors to the new batch of inexperienced people.
But, in our current climate of ego-driven "22 year old amazing CEO knows everything with zero management training or management research," we end up with perpetuation of subjective confirmation-bias fueled "only 22 year olds can do everything" lies.
Total agreement is not needed on which skill goes in which category. What is very important is that you don't try to assert that there is a third category of things older people are worse at and are legitimate business concerns. That would be ageist and invite downvotes.