This is a cultural imposition, not something a professional would do. Yet, we have modern designers injecting their personal taste of modernism into UIs, in this case, Github developers are not the average Joe - they are familiar with complexity, highly dense information screens (code!) and don't need any of this non-sense.
Non-designers I've met actually have a better more grounded and functional approach to design, which is what I think design is. Yet the general opinion amongst designers is that the engineers are like Milton from Office Space - they don't understand fashion, current trends and aesthetics.
They are also able to make payments using code scanning and normal transfer through the ease to use interface.
And this is in Myanmar, where we barely had internet for public use 10 years ago.
This practice should be applied universally throughout our lives in every field, perhaps except Art where creativity is revered and the avant-garde prevail.