Time dilation at the event horizon (EH) does not prevent the observation of accretion disks, which exist outside the EH and emit light. While light from objects crossing the EH becomes redshifted and eventually undetectable, the mass of a black hole can still increase as matter falls into the accretion disk, which can be observed through changes in orbital velocities of surrounding objects. The discussion highlights that although external observers cannot see matter crossing the EH, they can infer its presence and the black hole's growth through indirect measurements. The complexities of rotating black holes and their ergospheres also contribute to the dynamics of accretion and ejection of material. Overall, black holes can grow over time, even if the crossing of the EH is not directly observable.