I purchased several of their courses on sale and then set out to complete them. I found them scattered, disorganized, sometimes off topic, and frequently found that content was directly copied from Wikipedia.
I sent feedback regarding that last and was told that 'oh, well, someone probably copied from us to wikipedia." And yet - the thing I had written about was a bit of fluff on wikipedia that was incorrect, and wikipedia was the only place on the web I could source that particular 'fact.'
These are not in any way comparable to a university course.
The instructions encourage you to research outside the course, to cite those sources in your exam responses. I have done so multiple times, including explicitly identifying 'the expected answer" and then citing reputation sources that clearly identify that answer as incorrect, then given the correct answer. Those responses get marked 'incorrect.'
They also repeatedly use copyrighted art work without attribution, which raises a lot of questions over whether they have actually licensed the works.