Why should they ask someone who owns a house if they dont even have the idea that there is another system behind it? Why are you so against simply adding more ways to see that such a timer exists ingame ? I can understand if you say that maybe the OP should have looked at their house more often since they did not notice that it was gone until even the items were destroyed but I am honestly confused why you argue for making it easier? What would it change for you if they give you an overview of housing rules when you buy the house? Or give a message with the mogry post or when you log into the game when the timer is going down to a certain day?
You say that its fine because an outside source is there. Yet would you be fine if in other parts of the game you can only for example solve a riddle if you see the hints on some website outside the game? How about putting most of the lore in some books that you need to buy to understand it?
If this was a game that does not hold peoples hand at all then maybe you would have a point but this is a game where even the achievements are now forced on us. Something that is really not important. Yet there should not be a change to receiving housing informations because people should just research it outside the game? For something that might mean that they even could lose exclusive items that are not avaiable again or that they need to pay real money for?
Then maybe they should not state the "what happens if I abandon my estate" but rename it to something more like "Can the estate be taken away?" Because if someone does not plan to abandon their estate, why should they even look at this question? Because the timer is something that is forced. Also you already get a quest to enter the residential area when you are a newbie. So depending on when you finally buy a house this was months/years ago.
In the end they simply could give a pop up before people buy a house or afterwards. And on top of that give some messages ingame when the timer has like 15 days left. And lets not destroy items of people that lost their house. This is probably even worse than losing one because you can simply buy a new one, but you wont be able to get all the items back if they are destroyed.