They don't necessarily make it easy to turn off all the weird ad-type-stuff, but they don't make it impossible either. A quick tour through settings on install can get rid of it all.

There is still one absolutely heinous crime though - your system comes preinstalled with Minecraft and Candy Crush (and a couple other bullshit softares), and if you uninstall them, Windows 10 will automatically reinstall them. You have to do esoteric shit in the registry editor to disable this. It infuriates me.