So far, my G069 has been working well—no problems with the brake mounts, paint, or anything else. in my case I've bought this G069 to use as 2 in 1 bike (road + gravel). Works very well in both cases.
As for reliability, nothing is ever 100% guaranteed. For example, my neighbor recently bought a new Toyota RAV4, and after chatting with some experienced mechanics, they mentioned that the latest generation of engines has a known issue with oil leaking from the side cover of the chain valve trim. There hasn’t been a recall for it. In other words, even Toyota can’t promise flawless quality.
At the end of the day, every purchase carries some risk.