My theory is that Kickstarter expects there to be a high profile (e.g. $million+ light bulb pre order[1]) failure to deliver in the near future and is being especially hard on any new hardware campaigns. Some legitimate campaigns will be denied as a result of this, but Kickstarter is trying to preempt criticism.

[1] http://www.kickstarter.com/projects/limemouse/lifx-the-light...