Again, it's not about semantics. Replace small business with whatever term you want. The point is that the blog writer built a certain type of business then tried to take it onto a different track that put pressure on faster growth and got in over his/her head.
But funding from customer revenue does not automatically imply "small business". If you manage to generate a reasonable margin off that revenue, but you reinvest the profit back into the company, you can grow that way, as opposed to growing by taking outside money.