I would also argue, that most school system forbid the usage of a calculator the first couple of years (at least that's how it was Germany a few decades ago). The same with writing per hand. You can spell check by looking the word up and then manually correcting it.
Both require manual "labor" which leads to learning.
Last week I just said f it and developed a feature by hand. No Copilot, no agents. Just good old typing and a bit of Intellisense. I ran into a lot of problems with the library I used, slowly but surely I got closer to the result I wanted. In the end my feature worked as expected, I understand the code I wrote and know about all the little quirks the lib has.
And as a added benefit: I feel accomplished and proud of the feature.
By that definition it would be hard to justify anything besides HTML, JS and CSS. That would also exclude TypeScript and every JS Framework there is on earth. That's hard to justify from every angle (development and business wise) imho.