I feel like there is also a big misconception of 'waveform collapse' and the influence of a cognitive observer 'measuring' the final result, surely wavefunction

I feel like there is also a big misconception of 'waveform collapse' and the influence of a cognitive observer 'measuring' the final result, surely wavefunction collapse happens constantly due to several particles self interacting with each other and the environment. (not what your implying btw just needed to state it) and yes quite precisely the destroy entanglement point is the Decoherence process that permanently ties (correlates) that particle with the physical world around it. The future is inherently unknown to any observer and only advancing forward reveals the truth (at least on the Macro scale lol)