Yes, that is exactly the case. Lionel quotes Ben Smith's words in the video, and says he totally crossed the line.
That's what he meant when he said Smith "wrote his career suicide note."
Whether a local jury (BuzzFeed's headquarters is in NYC) could be found that would give Trump a fair trial is another matter. Because of that factor, DJT might elect to let this one slide, and go after BuzzFeed and its corporate patron NBC/Comcast in other ways. Of which he has many.
“Whether a local jury (BuzzFeed’s headquarters is in NYC) could be found that would give Trump a fair trial is another matter.”
The person who files a lawsuit gets to pick the jurisdiction that will hear the case (which is why you always want to be the first to file for divorce if it is inevitable). Their libel was published worldwide via the internet, so the victims can claim they were harmed in just about any venue on the planet.