There may be some truth to that. But when you buy used, you get what you get.
We sold some old junk frigates to Israel many moons ago. One year when my ship pulled into Haifa, we saw those old hulks we sold to Isreal, only Isreal had turned them into much better versions than what they originally were.
Then you have the Kidd class destroyers which were designed for Iran (before they took the hostages, which killed the deal.) When the sale to Iran fell through, these ships were put into the US fleet. They were designed with air-conditioned engine rooms (!) and sand separators for the air intakes. Both nice features. However, they also wanted actual livestock storage pens. The Kidd class destroyers were known throughout the fleet as the "Ayatollah Class." They were really nice ships. I never had an air conditioned engine room on anything I was on! But these were not old vessels sold off from the fleet, they were designed and purpose built.