and then you have the observer effect - through your consciousness, you can affect reality (at the very least) on an atomical level.
what you are mentioning here is just the relativity of time, it doesn't mean it doesn't exist, it just means it's not a constant. Einstein had the swag!
well, my point was that time does not objectively exist.. if it's not objective, the question is.. does it truly exist? factor in the observer effect, and it seems more and more likely that the observer creates "time," but that exact "time" is not necessarily bound to everyone else.
For me the a non existence of time requires a static system, a system that never change trough time, and such does not exist in the universe thanks to the second principal of thermodynamic, everything changes and the change can be expressed with a time equation and thus time exist, but where we might agree, is that the time as we perceived in our daily lifes might not be the real or rather the only representation of time as proven by relativity for example