Quick explanation:
The meme is not totally fake. It seems to be drawing from actual suggestions on the CDC website. But it is catastrophizing an extreme form of those guidelines ...
cdc.gov/coronavirus/20…
The meme: CHILDREN MUST SIT ONE TO A SEAT SKIPPING ROWS
These CDC guidelines are the abstinence-is-safest message. Technically true. But also wildly unrealistic for most humans. In reality, you're gonna use safer sex practices and take a little risk.