That would put Musk in a whole world of trouble with the US government, so it's probably not his doing. Turning off Starlink to the Ukrainians wouldn't award him a "slap on the wrist" type of punishment, but years behind bars. Aiding the other side in a conflict where the US is involved by sabotaging services bought by the US government would be an act of treason.
Oops.
https://edition.cnn.com/2022/10/13/politics/elon-musk-spacex-starlink-ukraine/index.html
Because US is a free country, and a man can use his own money on his own.
After also. https://www.vice.com/en/article/g5v837/ukrainian-city-removes-elon-musks-face-from-celebratory-billboard
P.S.
It's an offtopic here, but just to close this offtopic topic.