I do whatever I have to do...
"Comping" vocals, or anything for that matter, started out as a means to try different ideas out, and then decide, phrase by phrase what would work best. This was a way to make the decisions without the artist needing to be present, as opposed to punching line by line where the artist was involved in the selection of the phrasing.
These days, comping vocals has turned into a way to take a weaker vocalist, and get an acceptable track by means of 8-12 passes of the
same phrasing, providing you with enough material to manufacture one good lead vocal track.
I know exactly what type of singer I'm dealing with when I go to do a second pass of a lead vocal to "try some different things", and I get another track of the
exact same phrasing, with a delivery no more consistent than the first one. This is why comping has become so tedious in today's recording environment. And because artists are aware of the tools, it's not going to change for a huge percentage of artists.
The good news is, outstanding talent is still obvious...
and outstanding. When you get one in front of a mic, you know you've got the real deal, and things come together so fast, it makes it all the more obvious how tedious comping, editing, and tuning for hours, really is.