I wouldn’t read too much into it: I think the site is acting up. At first, trying to load the LMX2594 product page just got me a 404 error. Now it’s loading. Shows me zero stock.
Loading the page for the eval module (LMX2594EVM) works, but the stock info is all messed up: it says TI has two, Digi-Key has 18, and Mouser has 71. But clicking the Digi-Key and Mouser links instead links to their pages for a completely different product (a microcontroller eval kit), but that’s not where the 18 and 71 come from, because Digi-Key and Mouser have 1 and 47 pieces of the MCU kit in stock, respectively. Meanwhile, searching Digi-Key and Mouser for LMX2594EVM shows they both have zero stock.
Or maybe your friend has a special account status that lets them order “hidden” stock, much the way Analog Devices will supply small amounts of samples of sold-out products, meaning that they do actually have stock, but have blocked it from normal sale.
P.S. In the future, I suggest nor pluralizing part numbers, because at first I copied ”LMX2594s” into the ti.com search box and of course found nothing. Yeah, when we speak such a number out loud we can easily pluralize it, but since a trailing “s” is completely possible in part numbers (unlike in other pluralized numbers like years (1920s, for example)), it becomes ambiguous.