That's textbook intimidation, which in certain cases is a crime in the UK, and even some US states. You can also do it offline, for example, by sending a letter to the victim containing a photograph of the front of their house, and a photograph of you firing guns. The implication is pretty straightforward and doesn't even need to be stated: "I have guns and I know where you live. Pay me that money you owe me or I might use them." That implication is still there, for the victim, even if you add surface text like "Hey everyone look at these cool things!"
Only _after_ he was arrested, and the police went looking around his house for guns... did he admit that the pictures were taken overseas, he doesn't actually own the guns. And yet that's what the article leads with, like it was a known fact from the get-go and those silly-billy police knew that but went looking for them in the UK anyway.
This article is a great lesson in how to mislead without saying anything untrue.
His own words in a different article make the reason for the arrest clear:
https://nypost.com/2025/12/04/us-news/british-man-says-he-wa...
> “The arrest was based on two separate social media posts,” he said. “One was the photo of myself with the shotgun, [...] And the second one was my LinkedIn banner at the top of the page.”
> “I used the photo my business partner took on his premises as a header photo on LinkedIn with the intention he would look at that and go, ‘Why’s this guy posting that? I’d better call him and find out rather than dodging me’ as it had done for months,” he said.
EDIT 2: for avoidance of doubt, he did three days in a row of LinkedIn blog posts, where
1) his PFP at the time (shown in the top-right corner) was a picture of the business premises
2) the text of the post talked about the "delinquent client"
3) the post ended with a no-context-given picture of him posing with guns
Example: https://www.linkedin.com/posts/jonrichelieu-booth_jonthehash...
EDIT: and your second example is also dangerously misleading. Jason Arday (https://en.wikipedia.org/wiki/Jason_Arday) and/or his university reported 2 professors and 1 journalist to the police, pretending their requests for comment on his plagiarism were harrassment. For all three reports, police chose to take no action (nonetheless it still had a chilling effect on speech). What spiked the story is that Jason Arday and/or his university got very expensive reputation lawyers Carter-Fuck to send a C&D to the journalist's newspaper, promising expensive litigation if they published the story. That is what spiked the story, not intimidation via false harassment claims. Expensive lawyers making baseless threats work equally well in the US and UK to chill legal speech, it's not a policy issue.