Are you saying he didn’t plead guilty to protect his son?
I'm saying you will make up excuses for anything from that administration. He PLEAD GUILTY. It might have been to keep his cover as an alien from another planet. It could have been because the CIA needs him to in order to pull off some extravagant plot, it may even be part of an elaborate April Fools joke, but it is most likely, based on the evidence and information available, that he was GUILTY and was looking at some serious charges and potential time.
"The culpability of and potential charges against Flynn’s son, based on public reports, is less clear. Media reports identify Flynn’s son as the Chief of Staff and principal aide to his father at Flynn Intel Group, his father’s consulting and lobbying firm. Reporting further reflects that Flynn’s son attended a December 2015 dinner in Moscow with his father, who sat at a table with Russia’s President; that Russian television network RT paid for Flynn’s son’s travel to Moscow, and RT begrudgingly registered in early November 2017 as a foreign agent under FARA; Flynn Intel Group received $530,000 for work benefitting the Turkish government; and work for Turkish interests relating to Fethullah Gulen, the United States resident Turkish cleric accused of fomenting an attempted coup in 2016. Flynn’s son’s attending meetings and communicating with clients are not, of themselves, criminal offenses. Rather, prosecutors will need evidence of Flynn’s son’s actual intentional participation in criminal acts or his intentionally conspiring with his father to commit a criminal act, in order to bring criminal charges. However, the elder Flynn’s legal team having stopped communicating with the President’s legal defense team may suggest that prosecutors have expressed privately their intent to bring such charges against Flynn and his son, and that they may be negotiating a resolution.
In order for the Special Counsel to threaten and actually bring criminal charges against Flynn’s son, the prosecutors must believe, as set forth in the United States Attorney’ Manual (USAM), that Flynn’s son’s “conduct constitutes a criminal offense, the admissible evidence will probably be sufficient to obtain and sustain a conviction and that a substantial federal interest would be served by the prosecution.” Normally, DOJ policy would disfavor leveraging one close family member against another. The Flynn scenario, however, falls expressly within an exception. That is “specific justification exists, among other circumstances, where (i) the witness and the relative participated in a common business enterprise and the testimony to be elicited relates to that enterprise or its activities; (ii) the testimony to be elicited relates to illegal conduct in which there is reason to believe that both the witness and the relative were active participants; or (iii) testimony to be elicited relates to a crime involving overriding prosecutorial concerns.” Mueller’s team need not look beyond the three alternative justifications – any one is sufficient for the exception to apply; meanwhile, all three expressly apply to the father-son Flynns."
They had Flynn, they may have had his son. His guilty plea even if it was to spare his son, doesn't negate the fact he and possibly his son conspired in criminal acts. You can claim all you want to that it was coercion. The information indicates he was caught and made a deal.