There is value to having the conversation about "holding on for too long". But...
But, "euthanasia vs palliative care" is a conversation that must be between you (the owner) and your vet
It's possible that there are other, addressable reasons for being unable to make it to the litter box, and a vet visit is necessary to identify and address these issues
As well, it's possible that it is indeed "time". A conversation with the vet is best
I've gone full linux both at home and at work. Thankfully, most of the tools we use are cross platform / FOSS. But in the odd case, I use KVM (the linux equivalent to Hyper-V) to spin up a windows VM
It has it's issues (like graphics card pass-through), but it works pretty well
When cats do this (complain that the bottom of the bowl is empty), it's typically because they don't want to shove their face (and wiskers) into the edges of the bowl
Its called "wisker stress"
A shallower bowl (or just a small plate) is usually more comfortable for them to eat off of
Alternatively, they might paw the food out of the bowl then eat it off the floor, for the same reason
I would use it, if KDE plasma would support it in their settings GUI