The drivers don't work fine when you upgrade the Linux kernel - which is the planned obsolescence that Qualcomm has relied on to push the sales of the latest Snapdragon. I don't know if custom Android ROMs are still a popular, but (SoC & camera) drivers were what forced custom ROMs to stick old kernels.

Project Treble is Google's plan to keep the drivers working - I don't know how well that's going seeing that OEMs were given the option to not support it at the time it was launched.