My solution right now, until it becomes an available option in the app, has beento go to Ecency.com website on my phone. It is possible to highlight and copy text there. We are asking so many things of App developers right now that it is humanly impossible for them to do it all! We need to be patient, and it will all happen soon!
RE: Filosofía del respaldo: Una comparación crítica de los argumentos en torno a una economía basada en oro y en papel desde la perspectiva filosófica.