That's a New York Post editorial (a tabloid owned by Murdoch and the chief editor is Trumps personal friend Col Allan)

Flynn was acting as a foreign agent for Turkey, he discussed sanctions with Russia after he was named National Security Advisor but while Obama was still president, and then he lied about to the Vice President and the FBI.

He negotiated a plea deal with Mueller to cooperate in exchange for *only* being charged with lying to the FBI.

There's a decent argument that the case wasn't handled properly, and honestly I don't think he should serve time.  We're only talking about a few weeks tops and the guy dedicated his life to the military before getting caught up in politics and eventually cooperating with the investigation.  

But the narrative that they just tricked him into lying and that's how they got him is literally fake news and that article you linked which makes it seem like the only crime was lying to the fbi is a great example of Trumps friends spreading misinformation, and his supporters believing it.  

There has been a whole lot of that going on throughout the entire impeachment process, most of it doesn't even defend the president, but it's been successful enough, and repetitive enough that if you ask some loyal Trump supporters straight forward questions like 'do you think he use the money and WH visit to pressure Ukraine to announce an investigation into Biden?" the response might be about Clinton, or the DNC, or Comey, or just how stupid the dems are, or Hunter, or the whistle blower, or 'who cares even if he did, it's not impeachable'....but getting an actual answer is very unlikely since we all know he did it, but If you answer yes, then you'll have to think about why Trump lied about it over and over and over, and attacked all those people who said he did it.