Assuming backups are the route you want to go, it all depends on how you use your "homelab". To some people homelab is more cattle than pet and it's easier to just hit redeploy rather than restore. To others homelab means the place they store their family photos, run game servers for friends, or do their work from.

Because of the wide breadth of what a homelab can mean it's really hard to make universal statements about what is always good. By the style of the article the author probably wants backups & failure notifications in some way if it's not already covered outside of their custom monitoring.