We all have to realize that the programming language itself is an API. There is nothing wrong about using that API.
You don't have to use third-party module for every single line of your code base!
Use frameworks only for what they are designed for, and hook your own code there.
The framework you are using should depend on your code, not the other way around.
And, yes, you do have to learn as much as possible about the language and the inner workings, otherwise you will be floating somewhere high up on the stack, not knowing how you got there :)
For further actions, you may consider blocking this person and/or reporting abuse
We're a place where coders share, stay up-to-date and grow their careers.
We all have to realize that the programming language itself is an API. There is nothing wrong about using that API.
Use frameworks only for what they are designed for, and hook your own code there.
And, yes, you do have to learn as much as possible about the language and the inner workings, otherwise you will be floating somewhere high up on the stack, not knowing how you got there :)