Yes, that would be considered a lie, or at least a gross exaggeration.
But we can do the math using publically available information - assuming its correct. According to this article ( https://www.washingtonpost.com/politics/2022/04/08/us-quietl... ) (which honestly feels like a click bait hit piece), as of Apr 8, there were 5000 terminals in the country. It says SpaceX paid for 3670 of those (so about 2/3), plus internet service for all.
As of May, there were 10k terminals (https://www.cnbc.com/2022/05/02/ukraine-official-150000-usin...). Who knows how many there are now - 4 months later. So at $1500 a pop of what it costs to manufacture, plus probably same, if not more, to fly it to Poland, then transport it via land to Ukraine - the numbers add up. Add to that work being done to overcome Russian attempts at jamming (https://www.businessinsider.com/elon-musk-spacex-russia-ramp...). Add things that we are not aware of. I can see how costs can pile up.
> https://twitter.com/elonmusk/status/1374619379929772034
But this isn't a lie. Come on.