Yeah, not sure why OP is so damn condescending here. I just tried this app today because Innertune is currently having issues playing songs and this one works.
The interface is super confusing, tapping some buttons changes other buttons next to them without any apparent reason. No explanations what symbols mean. It took me a while to find where the “liked” songs end up. Then I later tried to find it again and just couldn’t find it anymore.
They have no reason to change that. They will long term want the exact same thing that twitter has, access to all user data and control of the platform.