A spheroid is a special kind of ellipsoid, with two axes that are equal in length, and one that is not. A star is a spheroid because it is the same distance from the center of gravity to any point around the equator, due to bulging. The distance to the poles is usually shorter than the distance to the equator.

An ellipsoid may have all three axes that are different lengths. The article used the word ellipsoid. They didn't specifically say 'spheroid'. They also described the universe as 'pill-shaped'.

So, unless they are more specific, I wouldn't assume the universe is rotating and bulging like a star. I kindof wonder, considering lightspeed delay, if half the things astronomers are seeing at cosmological distances are really optical effects, where apparent positions of phenomena are vastly different from the actual geometric positions of the same phenomena. Gotta wonder if it could lead to incorrect conclusions about the structure of the universe.