I don't think that he was trying to be a prick and I'll expand on his answer. Even after sata became main stream for hard drives, sata optical burners were not even available. IF I had to make a wild guess, optical drives had gotten so cheap, they didn't want to spend the money to change (in fact some optical drive manufactures quit making them, with at least one major company saying, we just cannot compete). They have finally caught up (I think only since newer intel chipsets don't even have pata). If you do some digging though, you will see that sata hard drives became mainstream a couple of years before sata optical drives did. You can even see it in oem computers. There are a couple of years worth of branded computers out there with sata hard drives and pata optical drives. Early sata controllers that worked fine with hard drives didn't even work with optical drives (at least to the best of me recollection, there have defanatlly been some issues with early sata drives not working with sata controlers).
there are probably more pata reviews because there are a lot more pata drives, and if you include people that dont have new computers, many still use pata (and or may have controllers that have issues with sata optical drives).