It's not the first time it happens. For example, in 2006 the US stopped supplying spare parts to F-16s it sold to Venezuela.[0] Oddly, other countries kept buying F-16s.

Or think about Boeing and Airbus stopping servicing the planes they sold to Russia. Other countries are still buying from them as if nothing happened.

[0] https://www.foxnews.com/story/venezuela-threatens-to-sell-f-...