Okay, they're the minority. So...
-It won't affect a lot of FC housing
-Meaning it won't do much good at opening up all these needed spaces for other players.
Making it pretty useless. It's like having a specific law forbidding people from ripping their own ears off. Most people don't do it anyway. So it'd be a stupid rule. By your logic, if it's such a small minority then what SE wants to do won't accomplish much. Making it a stupid thing to even implement at all in the first place. Or are you saying you don't care because you couldn't care less about minorities? Don't see why a person would point out that it wouldn't be the majority of people that would be getting bent over. Like that matters at all. It also contradicts the second part of your argument.
The rest of your argument assumes that housing is limited. It's not. There isn't only so much square yalms in all of Eorzea. The Lavender Beds is actually a multiverse of wards that doesn't have to stop at 5. They can put more wards in. So...you're wrong. The majority isn't going to benefit from having some small FCs lose their homes.
And again, people can take a break with their bros with the intention of returning to the game. So these people also actually want and can make use of their FC home too. And from a functional perspective, someone logging in for less than a minute once a month to reset the timer is using the home just as much as if no one logged on for that month at all. As far as other players are concerned it makes no difference either way, it accomplishes the same thing. Nothing will change in the game if the time was just set to 90 days to coincide with major content patches. NOTHING. Except it'd inconvenience less people and would make more sense, of course.
Alright, I'll make an alt on your server and you can give me 2.4mil if it's no big deal at all. You'll be buying a HQ Point Proven. Sound good? Didn't think so.