Yeah, I also hear/read a lot of people complain about it, but mine has worked flawlessly for over a year now. When first set-up, it required a break-in period like any other skimmer, but after that it was basically set and forget. It was hang on back from the time I got it, until September last year. It's been sitting in the sump since. Pulls dark scum and the collection cup needs to be cleaned about every 2 weeks. On mine, I added a collection cup drain that allows the skimmer to go unattended for a while when I am out of town.
Once the break-in period is past and you have found the proper adjustment for the air valve, it should be fine on it's own. Mine is.