Some people are fine with down time/inconvenience in exchange for security.

I have my boot drive on a secured USB and LUKS keyfile with the rest of the partitions on an encrypted SSD and data on encrypted HDDs.

In a smash and grab (or fascist government gestapo smash and grab), the server is pretty impossible to steal information from (inject illegal content to in order to fabricate evidence) without the USB and they can't simply inject boot malware either. A network device is almost always findable either by cables or WiFi broadcast analyzing.