the dummy songs were supposed to be a pastiche of the low budget soundcloud rapper sound that was prominent during 2016-2018. that's why they sound cheaply produced and badly mixed. it was an interesting experiment but the issue is he came back with those songs after a three year hiatus and it sounded like he completely forgot how to make good music. they're basically the entire reason why testing performed so badly, his hype died after he put out those songs.
Man you hit the nail on the head about why Testing rollout was WOAT