I'd format it with a fresh version of whatever OS came on it just to be safe. I actually have always done this when buying pre-built computers just to get rid of all the junk that comes from the manufacturer.
What's worse though is that they apparently don't have any QA whatsoever since they pushed an update that made the device basically unusable (keywords: Nexus 7 2012 Android 5).
Not running crapware is theft, just like not watching commercials is theft. The only way they can afford to sell you a PC at those prices is by subsidizing their profit with crapware income. /s
Plus you need to have a separate OS license as well to make it work.
It's challenging because most people can't install an OS.