I think a more likely reason for a ban would simply be that the Vitamin D connection was being highlighted by lockdown skeptics for quite some time already, as

I think a more likely reason for a ban would simply be that the Vitamin D connection was being highlighted by lockdown skeptics for quite some time already, as part of investigating the Swedish outcomes. The problem is that to highly liberal Google employees it might look 'racist' because the Vit-D connection came out of trying to figure out why Swedish migrants were over-represented in ICU cases, also African-Americans. For instance, in this comment from six days ago I write about a possible vitamin D connection: https://news.ycombinator.com/item?id=22968268 https://news.ycombinator.com/item?id=22968268