ISP's also have dumbed down wifi routers. The reason is simplicity and ease of diagnostics. There are essentially no customizations on ISP routers other than the SSID name and password. That way if there's a problem, the ISP operator can reset the unit easily. There's nothing to screw up in the software. So if a reset doesn't resolve the issue, then likely the hardware has failed and must be replaced.
The EERO is just 1 step above that. It has some customizations but is still purposely kept simple to prevent technical support calls. There's less to screw up.
Asus routers are enthusiast prosumer grade. The software has alot of options. The UI is kept manageable, but you do need to know what you're doing to adjust some of the parameters. However if you're tech savvy, it's easy to figure out.