There's no malware in it currently, but I understand your concerns - I could be lying, go rogue later, or just get my access stolen.
One option is to vet a version yourself and disable auto-update, but that's not really feasible to spend time on for most people.
Sorry, no sleight intended against you, just a general concern as more and more cool utilities keep getting built into the platform.
No offense taken, you actually made me reconsider trying out random extensions that sound like mine to make sure i'm not reinventing the wheel