I don't think we are talking about the same thing. I meant "neccessity/ability" from the viewpoint of a rider in terms of who wants to win those seconds under current set of rules. Everybody (that's going for GC)...Sorry, but it's a rule, a made up concoction, not a necessity. I don't like the premise, given all else is awarded by actual time gaps. Who made up this rule? Ability nets stage wins, but that should not come with a gift in seconds, especially when it doesn't on all stages. And I say this in premise, not based on anyone's ability.
You are talking about who wants that rule in the first place. That is definitely not everybody... Personally I think without bonus seconds, the race dynamics would change completely. Breakaways would more often be let go and races would not be ridden as hard as they are. Which I like.