On the higher end of the market, Google, Facebook, LinkedIn, Uber, etc.. You can definitely leverage MOOC learning and credentials. I leveraged MOOCs and their credentials as part of my personal brand to offset not having any degree. It helped me move into a software engineering role at a top tier company. It isn't just the top of the market either.. many employers are learning that there is a significant pool of talent available by including candidates with alternative educational backgrounds.

You missed a key part of what I said:

> the companies you describe are in such high demand by applicants that they have more qualified applicants than slots to fill

That applies to every company you named. It's great that you managed to get one of those slots. There are plenty of people who don't, though, and they can end up in a much worse position if they spend their time on learning that the majority of companies don't recognize.