worthless
"which, if true, suggests Google's security scanning for extensions, at least up to this point, hasn't been particularly sophisticated."
So, pretty much like the worthless "Play Protect" on Android which turns a blind eye (more like both eyes) to pre-installed malware pushed on to the devices by manufacturers, data providers, world+dog.
https://privacyinternational.org/news-analysis/3330/senior-google-engineer-reveals-privacy-bombshell-androids-preinstalled-apps?PageSpeed=noscript
^^^^(Excellent work by Maddie Stone in the link above)^^^^