I would assume that most of the apps that Lenovo Accelerator updates are also crap. I'd probably be inclined to start removing all of the apps from my computer. With these apps gone, you get a bit more free RAM and a bit more disk space, allowing you to make better use of your computer.
Also, I wold not recommend buying any Lenovo computers at all. Some Lenovo models have, among other amusing (or should I say terrifying) surprises, malware baked right into the UEFI. This is probably the worst root kit I've ever heard of: even after you re-format your hard drive and disconnect from the internet, your Windows installation will still get infected once the malware is copied from the UEFI back to your HDD. It's just a special gift that keeps on giving.
So, the best way to protect yourself is to keep away from those Lenovo machines. Also, make sure to tell those close to you not to buy Lenovo products either. If enough people refuse to buy anything from Lenovo, maybe they'll get the message and stop distributing malware.