There are Luddites - people opposed to technological change - then there are LUDDITES - people who don't want anyone to even know about such changes. Margaret, you and some of your sources come across like the latter. Your foolishness extends to suggesting that with "apps" why do we need coders?  
Who do you all think created the apps? Who saw the need for & conceived of them? Who had the capacity and background to realize the potential of the idea and the feasibility of an app? Who went to work and was actually able to follow the intricate steps of an app design and creation. Those are just some of the skills required to make that funny little icon do something that you consider has value.  BTW - the icon was developed by a coder as well.
Coding has evolved over many decades. Each stage in its evolution has required more people with learned skills to apply the new technologies. Many of these are & have been CODERS.
Please do not do any more damage!
PS - I learned to code 55 years ago