She has a hunch in her shoulders. On the bike she is staring down at the floor. On the road she has to look forward to see forwards. Have a look at how Julian Alaphilipe sits and you'll see a big difference. His chest is open neck is upright, lower back straight (even in slight extension going up a hill). I've never heard about bio mimickry, but I've been riding a bike for 40 years. If I wanted to get low, my pelvis would be rotated and lumbar spine fairly straight, and I'd be looking up with my shoulders wide and open. I don't see why a recreational rider needs to get that low, and if they do, why not put aero bars on? A beginner will have a different position than an experienced pro and to hold a low position, you need strong abs and core.

You need a haircut.