I can appreciate that to some extent. Supercessionism is a stain on the church, and certainly over the years there are many things that we can be said to have appropriated from Judaism. (I will rant at length about Maundy Thursday seders or covers of Hallelujah with resurrection motifs.)

But I don't think that can apply to the scriptures because the earliest Christians were Jewish, and had none of the social and political dominance that developed after Constantine's conversion. There has of course been significant theological and cultic divergence in both Christianity and rabbinic Judaism from Second Temple Judaism, which itself was a)hardly monolithic, and b)a significant shift from pre-exilic Israelite religion. (Although identifying which parts of the Tanakh, especially the Torah, are pre- vs post- exilic is obviously still very much an open question.)