From reading the actual article, the headline sounds dramatically overblown. It largely talks about a system to measure non local wind speeds so the balloon can

From reading the actual article, the headline sounds dramatically overblown. It largely talks about a system to measure non local wind speeds so the balloon can adjust altitude to use the wind for navigation (including standing still). It seems to largely leave out any questions I'd have around confining helium or whether power equilibrium can be achieved.