No not anymore. I no longer find it necessary now. Things have become much easier. Many routers have out-of-factory OpenWrt support or are outright built with/on OpenWrt. Companies like GL.iNet has made the barrier to entry the lowest ever.
Gone were the days we had to spot the right hardware versions, find ways to access debug ports, tinker with das uboot (or it had to be added…), flush the official firmware, and flash the right OpenWRT image. And this often would set you down on a path to compile the “right” kernel to work with proprietary driver/firmware blob files so hardware acceleration (e.g. NAT or WiFi radio) could work properly… Indeed I have learnt a lot but honestly I don’t really miss those days lol