Yes, they are more dangerous.Right... Bellends who dont leave enough space to brake are more dangerous on smart motorways than they would be on any other road where they dont leave enough space to brake.
Because if you don't leave space to brake in a 30 the collision will occur with a closing speed of 1-30mph.
On a smart motorway it could be up to 70mph. Or more if we're honest.
Thus the danger of the instance occuring, which you are focusing on, is broadly similar. The danger of the actual instance is massively greater on the faster roads.