Of course you are suspicious of those comments; you can tell from your tone that you don't like Cantwell and want him being a disruptive influence, with a bad attitude, as the reason for his omission. I think you have a preconceived opinion of Todd as a character (you don't like his hair?/social media posts?; I don't know) and will always jump on the side of him being a bad egg.
Farke has history of banishing players: Leitner, Trybull and Drmic to name just three. Was this because of footballing ability? Probably not. None of us have any idea what goes on behind closed doors at the end of the day, but I honestly think there are some Norwich fans that are gleefully wanting to push Cantwell under the bus.
My personal opinion is that the answer probably lies somewhere in the middle. I certainly think this squad needs someone of Cantwell's ability in it though, and if this was a factor in the sacking then so be it.