Telling people that the solution is to sell their home to an insurance company as a solution is most certainly a corporate land grab.
You seem to be arguing about people/corporations that own multiple homes or even entire portfolios of property. These are not the same argument.
If their asset is gaining in price so much that the tax burden is getting high, then tax deferement until a liquidity event both keeps them in their home, but also keeps them honest about how much they are taking away from the rest of society by taking that piece of land.