I'm in 100% agreement with you!!! I myself have no real interest in 4K, I may use an external monitor at some point, but have no interest of spending that much money on a monitor. I'm sure there are some people with specific professional needs that would benefit from 4K external monitors, but don't believe it should hold haswell release up. There will be many more MBP releases before 4K monitors become the main stream.
The real interest i have on 4K is the lowering of normal 1080 tv after they will land market consistently...