Feeding is a strategy. Regardless of whether you like it or not, it can help you get a win. Overall, I think ( and from experience of defending against it ) it's got more cons than pros, and thus I don't use that tactic. When you're scouted, and found out to be feeding, you're gonna get attacked, or at least you should get attacked, by both armies or whatever, 2v2 , 3v3, whatever... Everybody is gonna go for you.. and when they get there, you won't last, because you haven't built. yea you can get warthogs, but they are only scouts and against a full force, they're nothing...
Feeding = Loss. Play a mediocre team, and you MIGHT win. Any team above that level, will get the win.
All is vanity
--Real Talk