I don't think you need to worry... After all, somebody took Bowies "rock 'n' roll suicide" and made a parody out of it, but did Bowie get offended by that? No, he just took the parody and made his own version of it, 70-style.
so, I don't think Bowie will let this come under his skin so to speak...
But I agree, they shouldn't have made fun of him...