We're not seeing many cases of a leading group being caught in the last 10-15 kilometers (at least in the big races). A shame. It used to be one of the characteristics of cycling, and as a viewer, you knew that the suspense would increase towards the end.
Now, the motorbikes keep the speed up and reduce factors like the wind and the drag. It's not that costly to be sitting out in front.
I know some say the motorbikes have always been there, sure - but the races are also different these years. The top 5 riders are much stronger than the second best. They don't need help to be dominating.
It would be great if there was more focus on removing the mentioned external factors. We have great ways of filming the riders nowadays, with drones supplementing the helicopters well. The front view shots from motorbikes are no longer as important to the understanding of the races. I also doubt that the world really needs dozens of still photographers on the road in a race.
In any case, fairness should be prioritised above media access. My suggestion is introducing a 3 second rule as the default minimum distance between motorbikes and riders.
(And yes, I was happy to see Van Aert take the win today instead of the usual suspect, but it doesn't change my view on the tendency.)