I think there is some value to being grateful if you're in a reasonably good place. Personally, it helps me anchor myself and my emotions better as someone who constantly worries about something.
The same reasoning behind not comparing yourself to others who have it way better than you still applies though. There will always be those who are much better off and those that are much worse off so it's important not get carried away or feel like your problems are not worth worrying or complaining about.
But I also know that whenever it's brought up by other people it's usually to say that your problems don't matter which is why I'm saying it should be something personal. Mostly for basic things like being in good health, having access to food and shelter and not living in a warzone.
Is there precedent for suing users for cheating/griefing in your game. It sounds like it could set one if it's a first.