It’s really the phrasing “average joe”. I would genuinely give the average Joe a strong recommendation to not self host.

A beginner wanting to learn to be more techy and willing to put in hours for troubleshooting etc? Sure go ahead. But thats definitely not the average Joe.

My biggest advice to a beginner would be to buy a spare budget router, plug it into your ISP router, plug your pc into the new router and do all your messing around in your own network.

Break the internet because of bad configure? No stress, it’s only your little network, your flatmates/family aren’t yelling at you.

Can’t figure out what you did wrong and want the internet back to search? Just plug your pc back to the untouched ISP router so you get internet again