There should be absolutely no problems related to AHCI at this day and age. And with plenty of people running RAID (AHCI), you'd expect to hear about it more frequently if it was an issue.
The most common problem you hear about is how an already existing Windows installation will bluescreen if and only if it has already been installed AFTER the change is made. But this also assumes that a simple registry change was not made beforehand; as if the key change is made the system will boot just fine.
If your optical drive doesn't like it as claimed by the reviewer, then you'll run into the problem... before it actually is a problem.