I retired a tp-link WR2543ND running OPENWRT 12/13 (cannot remember) as the main router a few weeks ago, It has been running doing a great job for well over 5 years. I live in an estate of many blocks of flats in the UK, and its wireless had to combat students moving in with alwasys next generation routers from ISPs. The 24 max transmit power with OpenWRT support, enough memory to hold an openvpn connection back to work with multipel SSID, well and price were my original criteria for purchase. It has been put a year so when I got it. Finally replaced with Archer A7, so the 5GHz devices could get the benefit of less crowded air waves. Still have 2.4GHz only devices so the dual band was the reason I got this router.
So EOL is a factor, but meeting requirents, todays and what you can predict over the next 3-4 years is perhaps more important.
Simon