However, it'll also bring all the bots and "wild west" of the internet to your house when you run your web server from home, and for anyone who has a couple of spare dollars, it's a much wiser choice to run a small VPS elsewhere to weather the storm.
shrug
In 25 years of hosting a dozen domain names on a server on my home connection, this problem has not surfaced for me.
[Internet facing router with up to date firmware] --> HTTPS --> [separate VLAN DMZ] --> [my hardcore IndieWeb VM/k8s/bare-metal whatever] --> [x No outbound access / paranoid local firewall inside the VM x]
[My home computer] --> SSH --> [my hardcore IndieWeb local cloud]
That's about it. Safe enough.