Suggestion : Does having a core knowledge is going to be useful in future?

I have 2 years of experience in Frontend Development, I started learning NodeJS and backend principles, I have invested lot of time in reading how NodeJS works under the hood.
But deep down there is always a question does it gonna be useful in todays fast growing AI world, does organization are going to care about the core knowledge?

If anyone have any kind of suggestion it would be really helpful.