No need for such extremes, it would already be enough to stop using Electron crap, or React on the terminal.
Followed by actually reading a data structures and algorithms book.
Finally, using compiled languages instead of interpreted ones.
No need to count bytes to fit into 48 KB.
I disagree. I use all of those because they let me get work done faster. I've shipped Electron apps to clients that are effectively just a wrapper around a command line app because (1) I knew the client would much prefer a GUI over a command line (2) I was on Mac and they were on Windows and I knew I could more trivially get a cross platform app (3) I could make the app look good more trivially with HTML/CSS than I could with native (4) Iteration time is instant (change something /refresh). The clients don't care. Interpreted languages are fine.
And that is how we get the mess we are in today.
Exactly. It turns out there are strong business incentives that favour tall towers of abstractions. Then everyone's using Electron, so it doesn't really matter if it's slow. People just come to perceive computers as slow. I hate it.