It isn’t twice as contagious. There is no evidence that when exposed you will contract this virus more easily than any other virus. It spreads faster because it is a very mild virus for most people so that they do not even know they have it. But the spread slows as more people are exposed and contract it.
The seasonal flues have been around so long that many people already have immunity which slows the spread.
Once a majority of us have had Corona the spread slows way down.
I hope you are very correct. From what I have read it seems to be twice as contagious. But right about now I really don’t know who I trust.