It is impossible to discuss "YouTube 16.40.35 Mod Apk" without addressing the legal reality. Applications like the original YouTube Vanced were not open-source projects that lived in a legal gray area; they were direct copyright violations that actively circumvented YouTube's monetization.
Downloading YouTube 16.40.35 Mod APK: Features, Risks, and Alternatives Youtube 16.40.35 Mod Apk
ReVanced is the open-source, modern replacement for the old "Vanced" project. It patches the latest official YouTube APK on your device without distributing a hacked APK file. It is impossible to discuss "YouTube 16
If the cost is a barrier, YouTube does offer ways to watch without intrusive ads that are safer than downloading a modded APK: and Alternatives ReVanced is the open-source
You might wonder why someone would download a version from 2021 rather than the latest Mod APK available.