100 % could simply mean fully recovered from his injuries, race ready and without pain. It doesn't have to mean that he's in the form of his life, at least as good as he was at the start of last year's Tour.
Within context I take Wielerflits meaning of "100%" as the definition provided by Plugge, Heijboer & Visma themselves, i.e. specifically when they say they won't take Vingegaard to the Tour unless he's "100%" & he can race for victory.
If he goes to the TdF there should be no ambiguity or backpaddling, i.e. Visma have stated he'll go to the Tour if he can win it. So as a spectator I'll take their word for it: if he's at the start, I'll assume he's in condition to win & yes, that means being at 100% (now whether he was at
110% in Combloux for example is another matter entirely). But one thing I don't expect (& this would be treating us like idiots) is for Vingegaard to arrive in Florence & Visma to start saying stuff like
'we'll hope for the best blablabla we have no expectations a stage win would be nice'.
Nah, I don't think so. If they send Vingegaard to the Tour de France, it's to win it. And based on the latest rumors & 'vibes', it seems increasingly likely he could very well be ready to achieve exactly that.
And my mind would be blown tbh.