Police officers? The main issue here is that those laws are about balance. Balance of your rights and the persons’ you are filming. There are some general rules and a large grey area.
In general your vlogging isn’t an issue. However, if you knowingly start recording a specific person e.g. a busker, or in your case a street scammer, things become more difficult - especially because you are vlogging. The expectation that you are going to upload the video makes it unlikely that you are just recording for evidence.
I am not a lawyer. I think the police promarily tried to de-escalate here.
While I think this is a great comment as Nebula is an interesting platform, I fundamentally disagree with how Nebula decides who can create content on their platform.
If I understand it correctly, you can only become a Nebula content creator if a content creator in Nebula knows you and vouches for you. This makes Nebula inaccessible for new creators.
That being said: With Nebula you do get a high quality selection of content creators.