I have many nerdy friends who have been Linux users for ages. But most of them don’t know such a thing as Openwrt exists or have never bothered to give it a try. It’s a very fun piece of software to play with and can be extremely useful for routing traffic. Wondering why it isn’t more popular/widely used.
I used it before, but ultimately it comes down to compatibility. Broadcomm is dominating the router space and 3rd party firmwares are a nono for that. So I just got an Asus that is supposed to be supported for a very long time.