Re: "illegal, illogical, and inexplicable"
The invasion of Ukraine is basically telling everyone "if you border Russia, and you're not in NATO already, Russia may invade you".
It's probably a don't even consider joining NATO and if there is any press about joining deny it strongly.
In terms of A.P. Vennings comment Ukraine was looking to join NATO
Ukraine actively contributing to NATO-led operations and missions
In September 2020, President Volodymyr Zelenskyy approved Ukraine’s new National Security Strategy, which provides for the development of the distinctive partnership with NATO with the aim of membership in NATO