Looking up a project on github, downloading it and using it can give you 10000 lines of perfectly working code for free.

Also, when I use Cursor I have to watch it like a hawk or it deletes random bits of code that are needed or adds in extra code to repair imaginary issues. A good example was that I used it to write a function that inverted the axis on some data that I wanted to present differently, and then added that call into one of the functions generating the data I needed.

Of course, somewhere in the pipeline it added the call into every data generating function. Cue a very confused 20 minutes a week later when I was re-running some experiments.

Are you seriously comparing downloading static code from github with bespoke code generated for your specific problem? LLMs don't keep you from coding, they assist it. Sometimes the output works, sometimes it doesn't (on first or multiple tries). Dismissing the entire approach because it's not perfect yet is shortsighted.