I don't know enough about the draft class as a whole to have a meaningful opinion, but based on the writeups I'm seeing, it seems that the Cubs are stretching for upside wherever possible, even with their signability picks. Chavers, for example, was likely 1st round material before he tore his labrum in 2019. Getting that guy as a 23 year old, post-injury, we'll sign him cheap, but there's a ceiling well beyond the traditional college senior draftee.
Obviously the first rounder isn't a traditional upside pick, but if a guy you have in the top 10 finds you at 21, you have to be pretty happy about that.