Unlike degrees or certifications (either you have it or not) there is no black and white for working experience. If you think it´s relevant working experience and if you know how to sell it to employers, then it´s working experience. When you show in your courses how to create Websites from scratch as you would do for paying clients, it can be a better reference for your skills than a standard one-pager reference letter from former employers.
It will definitely help if your courses do well in the marketplace. However, in the end, it depends on you how you sell it. I have seen instructors with some courses on Udemy for Business claiming that they teach and advise companies like [the list of Udemy for Business Clients]. That´s not completely incorrect or misleading if you can argue it.
