We see that, although both interpretations are possible, Occam's Razor cuts sharply in favor of the nearby quasar interpretation. The consequences of continuing to ignore this in journal articles, at meetings, in grant awards, in experiment and instrument design, in telescope allocation, in textbooks, and in the classroom, are to inhibit meaningful progress in the field on many fronts. This is true regardless of which hypothesis is more nearly correct, since ignoring useful, viable hypotheses or discordant data teaches unscientific behavior. Only the center of the galaxy-like mass which produces the energy is visible. Quasars really have stellar dimensions, occasionally surrounded by nebulosity.
Quasars have rapid light variations.
Most quasar light comes from a small source of solar system dimensions, even in quasars as big as giant galaxies. Such jets must be the largest contiguous structures in the universe. Such jets result from ordinary mass ejections, and are unremarkable in size. Small mass transfers are occurring at ordinary velocities. The angular size of visible nebulas surrounding some quasars does not diminish, and may even increase, with increasing redshift.