Thing is, its EOL, per Asus. Does this mean that it won’t be supported on OpenWRT for much longer?
OpenWRT tends to support devices longer and better than the OEM, but it depends on the popularity of the chipset inside the router.
Many different routers by different companies are almost identical internally, because they use the same chipset. Eg the RT-AC3100 seems to be a bcm53xx variant, of which OpenWRT supports a few dozen products. Support will probably only be dropped when every single one of those devices goes EOL and several years pass (ie no people left contributing/maintaining it and the builds break somehow).
Router chipsets can be very long lived. Many new devices use decade old chipset designs. Some chipset families have almost identical chips released every few years with slightly different peripherals, clocks & pinouts; but are supported by the same kernel drivers.
(This is all much better than the world of mobile phone hardware support. Maybe it’s because of different market pressures? Not to mention you don’t have a monopoly that benefits from keeping the hardware fractured. Imagine if people could make a competitor to Android that works across most devices out there)
Similar here.
Family is mostly OK on it. We used to have issues with iOS devices not noticing some new messages & calls, but that seems to have stopped a few months ago. Family is usually impatient about me getting to my phone and rings me using 3 different services in a row, one of them Snikket xD
Have not yet managed to get any friends onto it.