Oh yeah, these are AliExpress specials.
i think the main fault with the shift cable routing is with Microshift. Those never really routed well even on normal handlebars. Microshift should have made some routing of the cable that was more lateral instead of having it jut out at an angle. Like, ideally it would have some pulley or something.
I'm thinking of spraying Teflon or something on the cable path. It does shift, but it is hard to move.
Otherwise the carbon handlebars are great. You can feel the little bit of flex and even the wider "aero" parts of the bar are more comfortable for me.