Inflation is currently ~2% per year. If you are not getting more than that per year as a raise, you are getting a pay cut. If you are not earning more than that in returns on your savings, you are losing money.
If you have a bunch of cash sitting in a savings account making 0.03% interest, you are losing ~2% of your money every year. Invest it, put it in a CD that matches or beats inflation, etc.
Very true for "basic" life lessons, things that don't change very much over time. It's not a generation thing, just a matter of people having lived long enough to gain a lot of experience in various topics.
BUT an absolute disaster, when it comes to things that change over time. The faster and more fundamental things change, the worse would be any advice from people getting their experience before the changed.
So, basically: Learn to differ what topics you can get really helpful advice from older people, and what things you'd better not ask them.
or but washing machine in bathroom....