The two linked operating systems, Collapse OS and Dusk OS have the following descriptions:
Collapse OS
> preserve the ability to program microcontrollers through civilizational collapse […]
> Runs on Z80, 8086, 6809 and 6502 machines with very little resources
Dusk OS
> Dusk OS is a 32-bit Forth and big brother to Collapse OS. Its primary purpose is to be maximally useful during the first stage of civilizational collapse, that is, when we can't produce modern computers anymore but that there's still many modern computers around.
In these scenarios it makes sense to give up on TLS. So probably that is why the author decided to serve their sites over plain HTTP only.
There's a difference between supporting unencrypted connections, and only handling unencrypted connections. Since civilization has not yet collapsed, I wish they would support both.
Collapse OS
> preserve the ability to program microcontrollers through civilizational collapse […]
> Runs on Z80, 8086, 6809 and 6502 machines with very little resources
Dusk OS
> Dusk OS is a 32-bit Forth and big brother to Collapse OS. Its primary purpose is to be maximally useful during the first stage of civilizational collapse, that is, when we can't produce modern computers anymore but that there's still many modern computers around.
In these scenarios it makes sense to give up on TLS. So probably that is why the author decided to serve their sites over plain HTTP only.