Undoubtedly, programmers are a major user of keyboards, and IDE developers love function keys for esoteric shortcuts for debugging, moving around, and running code. So why do so many split keyboards not actually have the function keys.
I think makers are missing out a huge audience.
My additions:
F5: Also quicksave in most gamesF6: Also selects the “url bar” in most browsers, and Everything (by voidtools - very cools file-search tool. The literal best, even)F8-F11: user for debugging in vcodeGoing with specifics,
F12for Dev Tools in FirefoxF7andF8for Friendship Drive