Probably a lot of the reviews of no-name fuses on Amazon are real. The problem with fuses is they have to “break” to work properly. So the average purchaser puts no-name fuses in their car, and they seem to work. If there wasn’t a problem, say they’re adding an inverter or trailer brake, well, everything is working at installation, so no-name fuse must be OK. If there was a problem that blew a fuse, good chance it’s high current, like a short, and will blow a 25 A fuse as quickly as a 2 A. So, first fuse is replaced with no-name fuse, and it blows too. So, after 2 blown fuses, the problem gets fixed, new no-name fuse is installed, and everything seems OK. Either scenario will leave most customers satisfied.
Mike