> they have a right to record something/everything and someone/everyone around them in public

Subject to local law. It's an offence to make indecent images of children, for example.

However, it is absolutely not the case that Meta has a right to that data, as a data controller under GDPR.

> feels at risk

This is a red flag phrase: it's a justification that people whip out for all sorts of unjustified things up to and including murder.