What you're referring to are competing interpretations for what it means when the superposition of eigenstates collapses into a single state, which we call wave function collapse. The most popular interpretation is the Copenhagen interpretation (observation causes collapse), and the second most probably the many worlds hypothesis (we only observe collapse due to being in one path among all real paths).

Quantum uncertainty doesn't mean you have to approach every topic going "ohh we just don't know! No one can be certain about anything! Leave this to the experts!" These are surface-level descriptions of basic quantum phenomena.