How can you not follow wheels in that situation? Even if you realise you're in the wrong you can't suddenly veer onto the other side, you're going 60kmh with a load of other cyclists within inches of you. Front few riders, fine, and then others who were slightly further back and on the left hand side like Ganna. But for most? You're totally boxed in
I'm not saying once they'd made their bad choice they could suddenly switch.
I'm saying they should have been paying more attention at the pointy end of a stage finish. They'll have gone over this finish in the team brief before the stage start, its the last turn, its critical, remember go left, position yourself on the left for a better exit for the sprint, etc etc etc some might even have put it in stem notes GO LEFT!!!
Early team cars arriving at the finish would have radioed back to the DS if they felt the finish was awkward, remember guys go left at the roundabout....
Some might have loaded the route on their cycle computer so they could stare at their stem and just follow turn by turn directions.
But they didn't, the didnt pay attention they just played follow the leader because they werent thinking, forgot where they were, probably had no clue how much distance was left or anything.
Well except those that clearly did pay attention to the course route obviously.
I mean what are the supposed to do completely barrier off a whole route so the poor riders don't have to use their brains for once ?