I don’t think any generation is “smarter” than the last at any given age.
I think the latest generation is smarter in some technological aspects because they learn them in school. Older generations didn't have that opportunity because those technologies didn't exist then. When I have a technical question related to things like Iphones I always ask the youngest person that I know.
One advantage of older generations is that they actually lived during historic events while the young can only read an author's interepretation of those events