Recently, Hillion [1] derived the electromagnetic fields radiated by a point charge moving with a uniform velocity in a linear, homogeneous, weakly biisotropic medium. The reader is alerted to the following deficiencies in that work: • Hillion’s requirement of weak biisotropy is unnecessary in view of the general analysis already available on radiation from uniformly moving charged particles in biisotropic materials [2] and reciprocal biisotropic materials [3]–[5]. These earlier analyses [2]–[5] were conducted in the frequency domain. Their results can be easily translated to the time domain using straightforward and well-known integral transform techniques, because the space occupied by the homogeneous material is unbounded. Of course, the physical response properties must be appropriately specified. • The time-domain analysis of ref. 1 cannot apply to physical materials. This is because a physical material cannot display the purely instantaneous response properties delineated by (1) of ref. 1. Instead, a physical material must display a delayed response owing to causality at the microscopic level [6, 7], which is responsible for dispersion (in the frequency domain). Furthermore, isotropic chirality in physical materials is known to be strongly frequency-dependent [8]–[10]. Indeed, a glance at ref. 11 readily confirms the very strong dependence of the reciprocal part of biisotropy, i.e., chirality, of real materials on frequency, which well-known fact [12] is totally incompatible with (1) of ref. 1. Thus, dispersion cannot be ignored in a reciprocal biisotropic material. • Nonreciprocal biisotropic materials do not exist in nature, as Hillion has acknowledged elsewhere [13]. As of now, no artificial nonreciprocal biisotropic materials exist either [14]. Two separate mathematical proofs negate the recognizable existence of nonreciprocal biisotropic materials [15, 16]; see also ref. 17. Hillion may wish to elaborate on the foregoing issues.