Convenience for end-users and avoiding link rot is probably one of the reasons.

yeah, tunneling into your local network and then calling WoL from there is the way to go.

Not selfhosted but I think Pocket also falls into that category of service.

While Vaultwarden is great I would not suggest selfhosting your password manager unless you do regular backups. Losing all your password cause your server went down is a great way to ruin your day.

Nextcloud-snap is surprisingly easy to setup. snap install nextcloud is all you need to have a functioning setup. Then run a second command to setup HTTPS and you’re good to go :D