Rum and ashram don't get it so must be MS employees. Mistakes have been made by MS on 2 of their recentish phones. Ram and I are having a sensible discussion. So EOL means just ditch the poor sods who bought the troublesome phones like it's their fault? MS should keep faith with their customers and eradicate all problems before selling phones. MS seem to think it's OK to let the buyers sort out the bugs after buying! This discussion lets others have a viewpoint and helps others evaluate MS phones better.
As far as calling someone a MS employee just because they make a comment that does not appeal to your needs is just asinine. The devices were on the market for 6 months or more and probably didn't sell very well, so Microsoft decided to end them by declaring EOL (end of life). That does not mean that they stopped supporting them, but rather that the supply of said devices would be exhausted within the sales channels.
I bought my wife's 830 over a year and a half ago and they were hard to find then, only being on one carrier in the US. Microsoft had also made numerous comments at trade events and such that they would start removing numerous devices from their portfolio to help streamline the amount and type of handhelds available worldwide.
As far as eliminating all problems before selling the phones, that is physically impossible as these are electronic devices. a faulty battery or processor or memory chip can lead to all sort of bugs and phone issues that would appear to be software related. Microsoft, like all other production companies do not have the time to test all devices that flow down the conveyor belt, so they sample. They pick devices at random and test them. If there are no noticeable bugs, they ship.
As far as MS thinking it is okay to let users sort out the bugs after release, remember, they do issue software updates and firmware patches to correct problems that are reported to them. I have seen this with my Surface Pro 3 and now Surface Pro 4 when they released firmware updates almost immediately after launch to correct some major issues with the devices.
The surface phone when/if it comes out should be a sight to see. The hardware will probably be cutting edge and look great, but that does not mean that the OS will be polished, we can only hope. The train of thought is also that the surface phone may not be a viable iPhone killer until its second or third iteration, like the Surface Pros have become.