I definitely don't have the time or the willingness to write that much in a single day. At that point, my writing would be rushed and rather sloppy.

I'd rather take a much slower pace and put good content out there than just try to hit a magic two-digit quantity of posts.

If you find that you're willing and able to put that much out there every day, more power to you. But if it's not what you're cut out for, more power to you too. There's no perfect amount to write, and everybody's different.