I've used both platforms regularly over the years, and I have mixed feelings about both. I mean they both have some truly excellent content, but so much utter trash. There should be some kind of quality control.

They make it reaaaaally hard to find the good stuff. Many courses are time sensitive (e.g. there's no point in learning a 20 year old version of PHP), but they frequently lie about when a course was created which makes it impossible to filter out old stuff.

There are so many courses that could benefit from more interactive tests/quizzes, but it's usually limited to solving a few ridiculously simple multiple choice questions. I'm not sure if that's a platform limitation or a course creator limitation.