Does the server have to run headless, or can one person still run games locally on it while another has a remote session? That is, would I be able to play on the monitor/mouse/keyboard directly attached, while my partner has a session on a laptop?

Maybe everyone else is seeing something I am not, but what routing path is for internet traffic to “Future PC” and its neighbors? You have the ISP modem labeled as a passthru, which means it is not handling NAT/firewall. What device is binding to the WAN IP address that the passthru will be handing out? An unmanaged switch is not going to do that.

When people talk about “washing” produce, they always seem to mean “rinsing” - which is just tap water and no soap. Is this article telling us to actually wash, with soap?

Rinsing removes the outer layers of bio film, which is fine for bacteria that your body can deal with in small amounts, but I assume that is inadequate with a quickly reproducing parasite.