I don't know if this will die down or not; that's what eventually happened when Google revealed the Nexus 1 (iirc) wouldn't be upgradable to 4.0. So far, though, this point is significantly distracting from the amazing improvements in '8 - note how the linked article mentions it in the first paragraph, and I've seen at least one mainstream article [0] focused entirely on it.
There must be a lesson about product launches in this. If Microsoft had a good answer for this from the start - by "good", I mean one that satisfied journalists and their readers, and/or made it hard for anyone to stoke outrage - the positive press coverage for WP8 wouldn't have been diluted by this.
[0] http://mashable.com/2012/06/20/no-upgrade-windows-phone-8/