I'm not so sure quality does beat quantity every time, especially in the online world.

Sure you might write one awesome piece per week. But the person who is writing 10 mediocre pieces is more likely to be remembered simply because their name shows up on newsfeeds more often.

Plus it's my understanding that the algorithms favour higher outputs so are more likely to push that writer harder.

I say, if you have the time and ability to write multiple pieces per day then go for it. Taking action beats stagnation every day of the week.