I think a good way to end the debate on Github profiles is this:
Github profiles are advertisement for programmers.
Advertising requires resources - time, money, creativity and commitment and not every business is ready to pay to price. Sometimes advertising pays off, some times it doesn't.
No police arrests a business owner for not advertising. Same with github profiles. Decide to have one, contribute a little, much or nothing at all. It's a matter of preference.
Github profiles are advertisement for programmers.
Advertising requires resources - time, money, creativity and commitment and not every business is ready to pay to price. Sometimes advertising pays off, some times it doesn't.
No police arrests a business owner for not advertising. Same with github profiles. Decide to have one, contribute a little, much or nothing at all. It's a matter of preference.