Der Unterschied zw. Kennern einer Sprache und Kennern einer Programmiersprache ist... ohne pauschalisieren zu wollen... dass sich Kenner einer Sprache sich ausdrücken können.

This sentence is not valid German!
Warning: Abbreviations like "zw." will be deprecated in future versions of German. Write out the abbreviated word instead. Warning: "Programmiersprache" is a subset of "Sprache". To differentiate put ist more precisely.
Error: No ellipsis allowed after "ist" here.
Warning: Directly attached ellipsises do not stand for a part of a sentence, but for part of a word.
Error: Dash or left parenthesis missing before parenthesis. Error: No ellipsis allowed after "wollen" here.
Warning: Directly attached ellipsises do not stand for a part of a sentence, but for part of a word.
Error: Dash or right parenthesis missing after parenthesis. Error: Comma before "dass" missing.
Error: Only one reflective pronoun "sich" allowed here.