It's not mentioned in the terms of service either.
I would recommend removing this because it's against the GDPR... and even foreign companies have to comply (for the protection of European citizens, wherever they are) if they offer goods and/ or services to citizens in the EU in some way (European region of an app store, ad campaigns in Europe, etc.) I also think that the GDPR is pretty correct in requiring opt-in consent before tracking, so it's "the decent thing".
I would recommend removing this because it's against the GDPR... and even foreign companies have to comply (for the protection of European citizens, wherever they are) if they offer goods and/ or services to citizens in the EU in some way (European region of an app store, ad campaigns in Europe, etc.) I also think that the GDPR is pretty correct in requiring opt-in consent before tracking, so it's "the decent thing".