One thing BiekForumz tends to forget, is that not all bikes are drop-bar road bikes, and that not everyone rides the same kind of bike you do. Heck, most of my bikes are set up very much differently than the others; (2 drop-bar road bikes, a swept-bar Townie, an XC MTB, and a 26” BMX Kruizer; stem lengths range from 50-140mm). I mean, why have 5 bikes, if they’re all just copies of a same thing?

That said, a 0mm stem is a weird ask, ad CrimsonEclipse hasn’t come back to tell us exactly what they’re doing with it.

A little bit more about the “why” would help understand what the results they’re trying to achieve. There may be a solution using more readily available components, but we don’t know what that is, because they won’t tell us.