Sure maybe from a philosophical point of argument consciousness trumps all and physical existence and objective external reality should be viewed through that lense. But every single particle has a worldline tracing back to the Big Bang, where there were no conscious beings present yet. Only until the universe cooled and became less dense did consciousness become possible. So can consciousness really claim supremacy over external reality. To do so would require retroactivity or bootstrapping. Unless you accept the idea of a timeless universe where no point on a worldline (or collection of worldlines) is privileged, and now is a statistical reality more than anything in that there are more collections of worldlines with consciousnesses when the universe is relatively evenly made up of dark energy and regular matter+energy (highest amount observers compared to much closer or much further from Big Bang).
The flow of time may be a subjective illusion.