> It's not because we're bad at design or planning

No, it is, code writers are bad at design, testing and debuging. That's why LLMs are so popular: just throw together some code, see if it compiles.

How many (between them) incompatible GTK or QT versions are there ? Why someone has to come every few years with a new graphics library ? Is the JPEG, TIFF or PNG standard changed ? And who thinks that adding layers of abstractions solve problems ?