because engineering is the art of "good enough" and composer is clearly "good enough but a lot faster" which makes up for intelligence gaps in interesting ways
For me the bar for barely good enough is and always has been Codex. Before I found frontier models more trouble than they're worth. And there is still a massive amount of room to grow before I can genuinely say working with these tools is more enjoyable than frustrating for me and now I use them (and how I think they should work).