Brilliant.Your first paragraph made sense. The second is pure, uninformed speculation and leads to the misunderstanding of "fans"; most of whom don't ride much and probably never raced.
Vingo wants to win. Roglic wants to win. Kuss would love to win, but is paid as a domestique and operates under orders from the DS. The other two are allowed to set pace to gain advantage over the competition and not compromise the overall prospects for a win. As it stands only a complete collapse by any of these 3 JV guys would allow another competitor into the podium zone. They should be able to race each other as long as they don't bring adversaries along for a podium-threatening position. If they don't; the wailing fanbase would be disappointed and turn off their TVs.
Yesterday Jonas attacked when Primoz was supposed to pursue the stage win (because of prior time gifted to Jonas). Primoz was then challenged to close the gap with Kuss upon Jonas' attack, but the rule of No passengers shut that down and Kuss was floundering to keep pace anyway and Primoz took note of it. Roglic knew he was not going to gain much and to further pursue Jonas would've done some harm. The gap Jonas enjoyed to Primoz was an outright gift from he and Kuss. When they responded on that stage they both cut Vingo's gap in half in 2km without passengers. That's exceptional.
Today Vindegaard did what he should have; stay on Primoz's wheel. Sepp dropped off and, if I were the DS I'd balance the bad press for Jonas not dropping back to aid Kuss against the advantage of gaining further time. How that was decided we don't know but trying to portray either of the two strongest guys as heroes or villians is a conceit of prejudice.
Keep lurking, would be my advice for now.