Only for those who have yet to understand the implicatons of a virus doubling every 6-7 days in an enormous population centre. Of course we must assess the impact of Tier 4, and effectiveness, and availability of vaccines.Politically, that may prove a tad unpopular.
My worries are abating a little because no one yet has said that there is an issue with the vaccines and I find it unthinkable that they haven't been looking at this for some while. I also find it reassuring that no reinfections have been reported.
In one sense we are really unfortunate that this has occurred at this moment. On the other perhaps we are fortunate that it did so now and not earlier. On the other hand, perhaps it occurs now precisely because the virus is coming under selective pressure i.e. we will see more variants in future.