I did it recently and it still wasn't fun.

I bought an OpenWRT-supported router with an idea to upgrade from my older dd-wrt router.

I wanted to set up wireguard but saw the page about it and got scared, so for the moment I'm still using the old router.

It seems built not even for normal nerds, but for network professional nerds.

Your last sentence seems accurate. All being said, I still love how solid the router has been over the years.