Apparently Vanced was a patched YouTube app for Android, removing ads, adding a dark theme and YouTube Premium features (probably more ?). It was discontinued two weeks ago: https://www.theverge.com/2022/3/13/22975890/youtube-vanced-a...
This is the part I missed in the original conversations.
If you redistribute a modified version of a company’s app, it’s going to be taken down. You can’t distribute another company’s work as your own.
The difference here appears to be that it’s a patcher, so they’re not distributing the proprietary app. Theoretically more robust against takedowns, but it also significantly limits the audience of who can go through all of the steps to do it.
I expect the real outcome is going to be a game of whack-a-mole as random people try to patch and distribute the app under different names. This isn’t actually a great situation because it sets an expectation among users that the app will always be changing names and distributors. Hackers love these situations because the door is now wide open for them to insert malicious code into a version and distribute it as the latest Revanced. Not good.