Quite simply, we can't make public health policy on such shoddy guesswork, we must base policy on hard facts and evidence, and all measures should meet rigorous harm/benefit analysis.NERVTAG released their report on the deadliness of the new variant.
They assess a "realistic possibility" it has a higher mortality risk.
Which the front page of their report helpfully says is 40-50% chance of the statement being true.
"We have to do something" is no justification for doing anything.