Hi, @Felix Miata: It was the unfamiliar phrase, "bootloader stanza" that threw me. Once I realised that what you were suggesting was adding "noresume" as a kernel parameter at boot time, I had a look here: https://www.kernel.org/doc/Documentation/admin-guide/kernel-parameters.txt
"noresume" is described as so: "Disables resume and restores original swap space." However, the "nohibernate" option also exists: "Disable hibernation and resume." I applied the latter and found that not only was hibernate now absent from the DE shutdown dialog, but it was also greyed-out in the login screen's shutdown menu. I'm going to suggest that this kernel parameter is the best practice method I've been looking for. I haven't yet checked to see whether it modifies available options in power management settings, but suspect it probably does. My opinion is that "noresume" doesn't prevent the creation of hibernation images, just the use of them when booting. I suspect it also discards any existing image. Thank you for pointing me in the right direction.