Yes I know any feature that Android has you will try to discredit as much as possible.
And to the best of my knowledge Windows Phone doesn't support screen recording, it supports screen projection. You need a PC, you need to get the Project my Screen app working (people have tons of issues with it), then you'll need to find a quality screen recorder that possibly doesn't watermark your footage. And then recording audio is a totally different affair. What if you also want to show your face while the recording is being done?
Those are a lot of steps you'll have to do just to get your desired results, but on Android it's as easy as this:
Android 5.0 Lollipop - Screen Recording - No Root:
http://youtu.be/1GNRZzf9v7g
Also on Android you can select the bitrate and resolution of the video so that the video runs smoothly, and it's not like you'll always be running the app that it'll drain huge chunks of your battery.
Lastly I also find screen recording extremely useful to send a video of a bug in an app or game, or to maybe help out a friend with an Android device and sending the video through WhatsApp.
Still think screen recording isn't useful on phones? Think again.