I had this in my favorites. It wasn't supposed to be a guide. You may be right about those solutions not working anymore. However the problems are still there. I had to disable several of those telemetry tools in the Task Scheduler just yesterday on my Win7. I'm pretty sure I've done this before.
The only thing that changed since the preview build is that there are 3rd party tools to do the job for you...
It mostly doesn't apply to retail, and most of it won't work. Plus you'll disable useful functionality with no privacy implications if you follow it.