Yes and I rolled my eyes accordingly. Ethiopia has a National Museum, they've had one since 1944 and they're always adding to it. Hell one of their most famous and noteworthy exhibitions is fucking Lucy. I've been to the Ethiopia National museum twice and they have many artifacts from their past on display and they're all well kept by the research department, and the museum is funded by the government. This will come as a shock but there haven't been hordes of shady black guys from the criminal underworld or political world who've emptied the museum dry and sold everything in underground auctions because something something corruption.
What evidence is there that a ultra capitalistic first world country with no actual ties to those artifacts wouldn't sell them to a bunch of 1%ers so they can hang them in their private collection so they can brag to their equally rich friends about how much they paid for them?
Your complaints are only slightly valid if Ethiopia didn't have museums or shit, but they have a number of government funded ones that are well maintained.