Agreed although there are probably easier ways to achieve stable temperatures, e.g. a cellar. The rest is definitely marketing hype. For remuage the sparkling

Agreed although there are probably easier ways to achieve stable temperatures, e.g. a cellar. The rest is definitely marketing hype. For remuage the sparkling wine bottles are slowly tipped from horizontal to vertical so that the sediment gathers at the cork end. The sediment can then be removed and the bottle recorked. There should be very little or no sediment in wine that's for sale.