I am an early adopter of a Pine product. I purchased the Pine64, a case, and some accessories. When I had problems with the product, the folks at Pine64 were completely silent and refused to communicate with me. It is possible that their customer service has improved since I last made a purchase. I will not test it and cannot recommend the Pine products. However, the idea of a $100 computer is tantalizing and I really hope they get their act together.
I agree with Spydum. The reason I agree is - Layers of security are required. You should not use a root account for your web application. You should also use escaping, properly formed queries, and prepared statements. You use best practices in an orderly manner and you will be much safer than just picking one "silver bullet". Not every attack provides root access to the database or server. Why make it easier for folks? Least privilege is a viable tool in your bag.