This is a polite way to say "it probably is illegal". As long as there is no court judgement, one cannot write a definite opinion. If the authors directly wrot

This is a polite way to say "it probably is illegal". As long as there is no court judgement, one cannot write a definite opinion. If the authors directly wrote that it is illegal, Microsoft would surely admonish [is this the correct English translation of the German verb "abmahnen", which has a very specific meaning in Germany's legal system?] the authors of the texts or the medium that publishes such a statement.