AI is a broad family of statistical and simulation algorithms.
They don’t replace algorithms, they are algorithms very powerful for some cases. For other cases they are less powerful, or overkill and they shouldn’t be used. But there is no dichotomy, as one (AI) is part of the other (algorithms)
How is it useful? Dessert vs food?
“At the end of the lunch nowadays everyone want to have a dessert, but this is wrong because they should have food”…
The sentence AI vs algorithms sounds pretty much like this