18 months ago I bought these Kocevlo handlebars that came with a carbon Garmin mount:
https://vi.aliexpress.com/item/1005006561735597.htmlThe mount has always been quite flexy which is a little distracting as your Garmin and light vibrate over bumps. Anyway, that escalated recently as you can see in the attached picture, totally coming apart.
I've replaced it with the integrated aluminium ZRace mount from here:
https://vi.aliexpress.com/item/1005007716081597.htmlThe ZRace piece seems much higher quality - the Garmin fitting is more secure, there's no flex at all, rock solid and very secure.
It amuses me with the Kocevlo bars, the bars themselves are great but the other parts (spacers and mount) are pretty crap. I would've thought the bars would be the most difficult part to get right!