Surely it has a USB controller that translates SATA to USB, no? I’ve heard many of these JBOB enclosures have problems with drives falling off the bus or something in 24/7 operation.

Here’s a video from Level1Techs about USB enclosures, and at the 12 min mark or so, he talks about the USB controllers on these enclosures typically being trash. The one he recommends was $130 ($150 currently) and still has that issue with getting locked up if the connection is bad (e.g. cable gets bumped).

He does mention the USB-C controllers are getting better, so maybe those cheap emclosures are fine.