Observation in quantum mechanics also perhaps just sets up a frame of reference and inspection wherein you attribute a definite meaning to the particle in relation to its various attributes which are inherently dependent upon context. Matter is objectively real, but what comprises it is analogous to aspects of wave phenomena which are actually quite mundane to behold in classical mechanics. It's not all quite as trippy or gobbledegook as it sounds. I personally think things don't just pop in and out of existence or even in and out of intrinsic definiteness, on a fundamental and intrinsic basis, with observation. I strongly suspect that that is a misreading of the science.