You are conflating two difference stances. Take a break is not without consequence nor did Yoshi insinuate otherwise. If I unsubbed after a handful of Savage clears, I can't expect my current static to kick whomever replaced me months later when I decide to come back. Housing, due to its limited supply, is similar. Our sub only guarantees us access to the game itself, not the side amenities. I'll grant you, being subbed should protect your house even if you cannot set foot in it, though I can't see that causing a problem since you could easily have someone log on for you. I mean, I could even explain how to do it to my mother if need be and she's not great with games lol. I also never recall them saying they wouldn't implement a demolish system and I suspect you may have misinterpreted it. With the way housing works, you'll inevitably have whole sections where the players quit along ago and have no intention of coming back yet no one can ever occupy the plot. It's wasted resources I cannot see the devs just sitting on. Unless they do adopt a better system where everyone is guaranteed a house, demolition is necessary.
Could they extend the timer? Sure. But if I remember right, they disliked the original 90 days because it took too long. Which brings us back to my previous point: they don't want us unsubbing for long periods of time while holding onto limited supplied content. The person you quoted beneath me has a good suggestion though.
I do want to say I don't like their system. It's stupid they should accept people just aren't interested in a large social ward setting. Instanced housing would be a massive improvement and allow for more customizable feature, especially if it's all handled client side. I partly wonder one of the reasons they don't go in this direction is the enormous undertaking required to essentially rebuild housing. A good number of players couldn't care less about it, so that content update would be utterly meaningless to them yet likely be all we got just due to time constraints. More likely, they're being a tad stubborn much like they were with Grand Company restrictions in PvP. Perhaps this is less an issue on JP servers? Maybe people socialize better there. Who knows?