the reason that we must take this seriously is that if don't say any thing, it is considered as some kind of approval.
just as the presentation of the work in Islamic Republic of Iran TV is considered as kind of approval and prestige for it.
there are lots of people with few knowledge of Java platform at higher management positions who are members of this list, and are responsible for making high level management decisions in their organizations.
these few emails will alert them to be aware about rejection of the framework  by professional Java community.