It's exciting to see a an OpenWRT router where compatibility is guaranteed! I've been running OpenWRT at home for years, and whenever it comes time to upgrade, it's always a deep dive into their Table of Hardware [1]. Many of the newest routers with an absurd number of antennae that you might see at big-box stores like Costco have incompatible chipsets, so usually I have to buy something a bit older.

Most recently I bought a couple of Belkin AX3200 routers because they support WiFi6 and are only about $50 USD. The annoying part is that they're a Walmart exclusive, but they have worked flawlessly so far. Still, I'd rather have the new, officially-endorsed one.

References: 1: https://openwrt.org/toh/start