tl;dr: F-Droid argues that Google's upcoming Android Developer Verification (ADV) program—rolling out September 30 in Brazil, Indonesia, Singapore, and Thailand—is a preinstalled system service that will block installation of apps from developers not centrally registered with Google. They contend the anti-malware justification is a pretext, since the Developer Console ToS lets Google define "malware" arbitrarily (potentially targeting ad blockers or F-Droid itself), effectively ending 18 years of open Android software distribution. Despite widespread opposition from EFF, FSF, ACLU and 70+ organizations, regulators have been unresponsive, and key questions about how existing sideloaded apps will be affected remain unanswered.