I agree, the voters wouldn’t disappear but it would take time for them to find a new party to vote for. The time difference might be worth it.

Also if you check your Google Photos privacy settings there is a toggle for “Approximate missing locations” which tells me that Google is most definitely also using private images as training data and not only street view.

Maybe you have downloaded the wrong APK, there are some bad actors providing “pre built YouTube Revanced APKs”. Be sure to only download the Revanced Manager from https://revanced.app/ and the unpatched YT APK (version should match the recommended one in the manager) from a trusted source like apkpure etc.