Sorry, but I feel that this is a somewhat patronizing post by the OP
At the end of the day the beauty industry remains unregulated, and any "Tom, Dick or Harry" can set up shop with fake products from Fleabay and trade as a business.
The fact that some of us have not come into the beauty industry by way of a 3 year college course, but through differing circumstances have attended shorter courses that enable us to trade with legitimate insurance does not make us any less professional. If that were the case then such courses would not be accredited by professional bodies.
My own personal situation (as I'm sure with many others on here) is that I've retrained later in life having spent the best part of 30 years in a PA role, including responsibility for Accounting, Marketing, Health & Safety & Human Resources.
Being able to give up work for 3 years to attend college and chase my dream wasn't a financially viable option for me, however instead of just setting up in my back room with cheap products, I chose to invest in training with a respected manufacturer that would allow me to offer my services both professionally and with the full backing and ongoing support of an industry body. Does that make me a non-professional?
A little bit of respect and understanding works both ways, there's room for all of us here - at the end of the day we all have our clients' best interests at heart