Benjamin Kerensa, a Mozilla and Ubuntu community member, writes about open source, Linux, Firefox OS, and Netflix on Linux.
HN links it as a rebuttal to a Slashdot article on Ubuntu's shopping lens and for details on Firefox OS devices.
FxOS tablets already exist [1]. The Flame and ZTE Open C are higher end devices than the device talked about in the OP. Not quite Nexus 5 level (more Nexus S I think?) but are mid-range.
I'd like to see more pushing the envelope of what HTML applications on mobile devices are capable of. Currently devices use the Facebook, Mobile and YouTube mobile sites. These don't make great use of HTML APIs. There is little in the way of offline support for example.
I'd like to see developers, or Mozilla, provide versions of these applications that are equivalent to native. I don't think there is much missing in the web platform to make this difficult.
[1] http://benjaminkerensa.com/2014/05/02/unboxing-first-firefox-os-tablet
The Slashdot article is pretty much just FUD please see my response
http://benjaminkerensa.com/2012/09/22/lots-of-hype-over-shopping-lens-in-ubuntu-12-10