This funny stat stood out to me as well:

"Additionally, in 2020, Google Play Protect scanned over 100B installed apps each day"

Are there really 100B unique apps? Or are they saying they scanned some much smaller number of apps, that happen to be "installed" on a shite ton of phones? Why is the number of installs relevant to the how many unique apps were scanned on a cloud server somewhere?

Edit: I'm assuming "Play Protect" just uploads a hash of the binary and makes sure that particular binary has been previously scanned?