In fairness to the op and we've all seen them, but some cyclists are a law onto their own and ride as if they had a death wish. We're not all angels.
However
@stuckinthemud no route is dangerous. The people who use them carelessly are the danger.
A cyclist has just as much right to use any road he or she wishes whenever he or she wishes and without being put at risk from other road users.
The recent law changes were made to ensure that those with bigger, heavier, faster vehicles take the consequences of mishandling those vehicles more seriously. If you choose to travel in something weighing the better part of 2 tons and has the potential to injure or kill, do so very carefully.
The idiots amongst us we can all agree don't make things easy, but for the sake of everyone's wellbeing, stop, let them do what they're doing and then carry on whilst they're out of the way.