It appears as alarmism until the evolutionary dice roll lands on "Ebola-like severity with Covid-like infectiousness". Some prudent concern and hard thinking being applied to unpredictable tail risks isn't alarmism.
That is fine as long as same is applied when it does not suit the $uits.
Such concerns also apply in the abstract to some unknown future virus which may work via a different mechanism to Covid and be capable of something far worse in terms of mortality*infectiousness.