[citation needed]

Afaik this was a lone study that might have been relevant only to the UK debate (and very late at that). Italy had already been in full lockdown for weeks before it was published, quite a few other European countries had gone in shutdown or closed borders, and obviously Asian countries had already taken countermeasures for months.

Being so cavalier with the truth is, of course, why intelligent people don't take seriously a lot of anti-science attitudes.