Bytecode inspection works both ways in this case. Vanced itself is based on decompiled bytecode of original Youtube app. Another team can build on top of Van

Bytecode inspection works both ways in this case. Vanced itself is based on decompiled bytecode of original Youtube app. Another team can build on top of Vanced app just like Vanced devs built on top of Youtube app. So we wouldn't necessarily say whether it is using a hypothetical "source code" leaked by Vanced team or not by bytecode inspection (nor would it matter much).