Complex sentence: Today, Helvetica is shunned by many designers since it is overused due to the fact that it is the default typeface on many desktop publishing software packages, made so because it is such a reliable, clear and easy to read typeface.
Split into simpler sentences: Today, Helvetica is shunned by many designers since it is overused due to the fact that it is the default typeface on many desktop publishing software packages. It is the default face because it is such a reliable, clear and easy to read typeface.