Took 45 minutes: Maybe find another job. You’re not good at it.

Bit harsh.

The OpenWRT guest wifi guide isn't a simple switch like you would get on your OEM router, but involves manually setting up a bridge device, a new firewall zone, and a new AP on one of your radios.

This can take some time if you want to do things the right way. 10 minutes to setup with no extra config steps. Add another 10 if you need to move around your firewall rules, and another 20 for random debugging.

https://openwrt.org/docs/guide-user/network/wifi/guestwifi/configuration_webinterface

Although, you set it up once. After that it's just a checkbox.

I have a feeling this is satire, and I'm usually the type of person to miss the joke and think it's genuine

I mean fuck me, i can build an entire bespoke DDU from bare metal to cool down in less time than that.