The question that lingers is not about Flynn and his dishonesty, but why he told the Russian ambassador prior to Trump even taking office that the new administration would lift sanctions imposed by Obama for Russia's hacking during the election, which not coincidentally benefited Trump. No chance Flynn formulated the idea of lifting sanctions on his own. All of the media talk is about Flynn's dishonesty, but Flynn is out now, while Trump remains.
I've been saying this for weeks - the dossier is almost certainly at least partially true. The connection between Trump and Russia is going to eventually cost him the presidency.