I generally do not find Vingegård to be a particularly exciting rider (nor does he show much personality), and this view is based on a more general pattern of conservative riding (or at least only attacking from far out when the competition is Pog-free). As a longtime follower of the sport, he is not an easy rider to cheer for. Some fans of Vingegård may argue that his coolness makes him an enigmatic character, but, really, to me he just seems like a simple man who follows the regime of his team in a very mechanical way. Also, the Danish media has essentially overexposed his life. For this reason, he is not shrouded in mystery in ways that that other Danish pro cyclists (think Jakob Fuglsang) are.
BUT, if I ignore my own general views on Vingegård and focus on today's race, I think that he did the only correct and rational thing for a rider in his shoes. He is not in France to ride for stage wins for Van Aert. Throwing away a possibility to ride for a stage win by refusing to ride with Pog was both a tactic that could benefit himself and definitely benefitted Van Aert, who would NEVER have won the stage, had Pog gone solo. Van Aert, should be plenty content with having the rest of the team riding for him when there is a much bigger GC scheme that needs first priority over his ego project. I reckon he is inching closer to a meltdown of frustration over how disastrous his season his been this far with a sole victory in E3 and then gifting away Gent-Wevelgem (in hindsight an odd decision given his current 3 year winning drought in the monuments).
The views from Belgian experts and Michael Rasmussen about Vingegårds riding also does not surprise me. Belgian cycling media has always been very patriotic about their own heroes (just like Danish media was last summer when Van Aert won stages in the Tour). The frustration of how Van Aerts season has turned out so far is clearly spilling into the analysis of Michael Wuyts and co. As for Michael Rasmussen, I believe he has never slipped out the bitterness that has haunted him since the Tour-exit in 2007 - afterall he should have been the Danish national hero and now he is viewed as a scam by the general public.