Right - and I’m all for paying a living wage for all jobs. Being a full time professor should pay well. And what we pay teachers in most places in the USA is ridiculously little.

What I’m saying is that we generally don’t expect that part-time jobs get paid as much, in total, as full-time jobs. Someone working 1/4 time getting paid 1/4 what a full time person gets (maybe a little more - or a little less - for the flexibility and/or privilege) is normal.

So asking what fraction of their time Udemy instructors spend on Udemy tasks seems like a prerequisite for judging the fairness of their pay, and I don’t think this article covers that.