Anecdotally, using Darktable, I could never get as good of a demosaicing result as using the straight-out-of-camera JPEGs from my Fujifilm GFX 100S. In challenging scenarios such as fine diagonal lines, Darktable's algorithms such as LMMSE would add a lot of false colour to the image.

However, modern deep learning-based joint demosaicing and denoising algorithms handily outperform Darktable's classical algorithms.