I think the parent author's main point is they used a defective RDBMS as a representative example of all. MySQL does not do certain things well. However many m

I think the parent author's main point is they used a defective RDBMS as a representative example of all. MySQL does not do certain things well. However many mature RDBMS's have solved these problems and its worth pointing that out before you drop the entire class of tools for the next shiny tech.