Well the one that replicates in two day's is at currently 16k of circa 120 k cases at least I think that's it currently ,so how has Delta which was ultimately under control relatively ballooned to at least double it's level of a month ago?
And there is the issue .
With people like that there is seldom sufficient Gap for safely moving outward or vice versa so that is why people tend to remain in the one lane IMO.