Interesting thread. Lots going on here.
Quantum indeterminism does not say that we change things by measuring them. It theorizes a hard limit on the amount of information we can have on a quantum system, which is probabilistic as far as we understand them.
So, if you precisely measure the position, then there is a certain amount of uncertainty in the simultaneous measurement of momentum - the uncertainty principle.
There is also the measurement problem, collapsing wave functions and all that jazz, which is closer to whatâs described above.