7th is a great result and 8th isn't? He feels taken by a chump because Vlasov is ahead of him in the pecking order, so he goes to Visma who have more and better leaders who'll be ahead of him in the pecking order and just demonstrated similar if not more dysfunction in terms of squabbling over leadership. it's quite entitled to expect the team to handcuff a much more established GC rider in favour of an unknown quantity, as Cian was at that point in time.It may be forgettable to you and me, but not to the 20 year old rookie for whom this would be a great result and wants to become a major GC rider.
You can also ask yourself, if it is that negligible, why did Vlasov think it was worth attacking a teammate for? Why do riders in the third group at 5 minutes from the stage winner, still sprint for places 25-30 in a Tour stage?
It's pride, it's trust, it's principle, feeling to be taken for a chump...
Not gonna pretend Bora handled everything perfectly, but this was hardly something worth a López-Movistar bust up. Hell, what caused the López-Movistar bust up probably wasn't worth that level of breakdown either.