I don't think so. The Software in this case is RCBasic interpreter and programs written in RCBasic dialect are not substantial portions of the Software (that would be important pieces of RCBasic interpreter source code), the same way as web page code is not a substantial portion of a browser and code written using Geany is not substantial portion of Geany. You're mixing two separate things here. One is a language as a design, syntax, logic etc. Second is the interpreter of this language. Just look at web browsers situation. The license a browser is distributed under has nothing to do with the license of the HTML/JavaScript code a browser is interpreting.