October, 2018: "In Europe, Speech Is an Alienable Right: [the European Court of Human Rights] upheld an Austrian woman’s conviction for disparaging the Prophet Muhammad."
I don't see the relevance of the account age as long as the person is engaging in a healthy discussion.
However, I have noticed that in other comment sections, such as those on „Der Spiegel“, some people attempt to dismiss the opinions of users with recently created accounts as well.
That's maybe part of a more general "perceived inability of some Muslims to handle polemics against their religion with grace" (from the article). Searching for "bobblehead Jesus" vs "bobblehead Mohammed" on Amazon is a good example of that.