Of course, the proposition that time is unreal can be understood as just part of another mental exercise, often found in philosophy. It surely cannot be considered a serious attempt to describe reality. But don’t underestimate the tendency of some philosopher to promote one or another form of nonsense, among them, the unreality of time.
Many people assume that when scientific cosmologists and theoretical physicists investigate the primordial conditions of the universe and advance theories purporting to explain how the universe may have originated, they are dealing with the philosophers’ Deep Question: Why is there something instead of nothing? But they are not. They are not investigating the why of the universe (as if they could find reasons, motives, or purposes behind the primordial conditions leading to the Big Bang).
There is plenty in philosophical literature which is not just analysis or elaboration of the work of science, and which is not modeled on science. What I stress is that philosophical discourse should at least strive for honesty, clarity and coherence, and that philosophers should not make obscurity a virtue, and should not offer vagueness and equivocation as profundity. I don’t have much patience for the pretentious type of speculative metaphysics which often parades as profound philosophy.
It is our thinking and our language that categorize the world into entities and relatively static objects. In actual reality most likely nothing is static. (No physical entity is ultimately static!)