Is it possible to exactly replicate the behavior of the "desktop site" slider in Firefox Mobile or Nightly on android by default for every site?
Note there is a related question Changing default view mode in Firefox to Desktop that does not fully answer this question because it does not manage to reproduce the "desktop site" completely. Namely it messes up the scaling of most sites resulting in it not showing everything and making the site unusable. Somehow the "desktop site" slider produces a much better result. You can see this for example on https://www.google.com/maps where the map cannot be properly brought into view when using the method of https://android.stackexchange.com/a/47259/226770 proposed and accepted for the previous related question.