I’ve been self hosting for over 20 years on apt based systems, aside from changing from telnet/ftp to ssh, adding in letsencrypt, very little has changed. You can still collocate your hardware, but it’s cheaper to use a generic VPS. You can host from home, but even a pi will probably cost more in electricity use than a $3/month vps.

Backups are far easier now as you use a VM provider like linode, digital ocean, even lightsail, which will schedule snapshots. If you run your own hardware then mysqldump and restore to your backup server is a small shellscript and cronjob. Disk encryption is handled by your OS.

LAMP was trivial in 2002, it still is. You can use nginx or postgres instead of apache and mysql, but it’s broadly the same.

If you want to make your site complex and dependent on thousands of JavaScript libraries and frameworks which change every year or two, that’s fine, but you don’t need to, it’s a choice, one which adds complexity. If you want five nines or absolute guarentee of not failing, you need to think more about replication than just a nightly snapshot, but that’s not a problem solved with thinks like kubernetes.

If you want to scale to millions of concurrent users pulling terabytes, sure, don’t self host from your DSL on a pi. If you want to serve a personal site for hosting bits of stuff, it’s not hard.