I don't think it's been shown to actually increase displacement and instability, in municipalities with a land value tax. It's theoretically the case, because now everyone is renting from either a landlord or the city/government, and if rents rise you might not be able to afford them.
In practice, land value taxes increase home ownership, so the actual displacement rate of a population might be the same or even less with LVT implemented.
> It would also encourage the childless to fight things like schools, as they would pay extra tax having them nearby.
Note that any existing property tax or council rates regime already theoretically has this effect too, but I don't really see this behaviour. It's a theoretical strategy that certain demographics could utilise, but not one that plays out in practice in any city I've ever seen.
In practice, land value taxes increase home ownership, so the actual displacement rate of a population might be the same or even less with LVT implemented.
> It would also encourage the childless to fight things like schools, as they would pay extra tax having them nearby.
Note that any existing property tax or council rates regime already theoretically has this effect too, but I don't really see this behaviour. It's a theoretical strategy that certain demographics could utilise, but not one that plays out in practice in any city I've ever seen.