I'll play ball for a second but tact refers to context. If Rog had been caught in a split & drafted to get back on, then fine, yes. But that's not what happened. It's not the first time this season there's been an overly zealous decision by the commissaires either. Josh Tarling's own misadventure in Paris-Roubaix springs to mind.
I mean look, everyone can hide behind the almighty 'rule book' as much as they want but we all know it's enforced (at best) inconsistently & mostly not at all.
So yeah, great job 'commissaires' *clap clap here's your applause*... although I'd hazard a guess on Tuesday everything will be back to business as usual & no one will get punished for the usual 'transgressions' which occur at every point of a normal road race stage in cycling.