How to explain to parents that if you learn to program, you do not need to learn all areas?

Question

Career in IT

I want to learn web programming and become a full stack developer. When I told this to my parents (namely, my mother), she said that you can’t only learn web programming, because if they take me to some company, then I won’t develop only websites, but also applications, games, etc. and I need to learn something else to make applications, etc. How to explain to mom that she is wrong or maybe I am wrong. Words like "you can't have one 5 dot in two professions at once" do not help.

Answer 1

What is "all areas"?
For starters, you need to improve your grammar.
Again, you are going to enter programming, and this is an area with a high entry threshold, you need to know and learn a LOT in order to somehow compete with what is now in demand on the market.
Mom is wrong that you also have to develop games and applications, but she is right that you need to get a normal, full-fledged education, because different data structures and algorithms are used everywhere. Games, websites, applications - consist of the same code.

Answer 2

If mom has 10+ years of experience in industrial development - obey
If less - no need to convince, just do as you decide