[qz2]

Until we actually hear evidence that it is, then it’s not. But we still have to sleep with one eye open.

[pmg102]

He means as it is more transmissible (but yes, apparently by the same routes and mechanisms) we need to tighten restrictions.

A rhetorician would call these different "methods" of attack but you're right that in fact they're merely different degrees of the same method.

[qz2]

True and I certainly agree with that side of things.