It depends on where you live, in some countries handfeeding (unless necessary for a baby to survive) isn't allowed or is frowned upon. Handfed babies, especially only birds, tend to think they are people, and require more companionship that some owners can provide, so in some places it's considered kinder to keep them in pairs in aviaries or flight cages and not handfeed babies for tamer pets.
Also there can be bad reasons to handfeed - some larger scale breeders will pull eggs to incubate very early just to try to force the parents to lay more eggs.
There are good reasons to handfeed, too - it's easier to find good homes for tame babies, and sometimes the parent birds just don't take great care of the babies. With larger clutches, smaller babies may be forgotten unless some of the older babies are pulled to handfeed.
Leaving the babies with the parents for the first 2 weeks (or longer with larger birds) and raising them with a sibling helps them develop better and not be so over dependent on people. Or, if the parents are tame or semi-tame, co-parenting can work well. That's where you handle the babies daily, possibly offering supplemental handfeedings, but let the parents do most of the care.