...and yet still you understand very little about quantum mechanics....
Geez. I studied physics for 3 years at the Uni of Technology and worked in that field for most of my working life. Hence my interest in the subject.
You quoted Wikipedia as a source and I was pulling your leg. Wiki will downplay it as it has a woo woo factor attached to it in the form of "consciousness can have influence through space". The founder of Wiki will not allow this as it is not to his thinking. If the experts in the field try to edit it, it will keep reversing back. No editing allowed here.
There remains 2 schools of thought on this and it just depends on your belief system.
This all depends on what the experimenter knows. If quantum mechanics has nothing to do with a conscious observer then why does a particle behave based on what an experimenter knows or doesn't know? If materialist are correct, then a particle should behave as a wave or a particle independent of observation but that's not the case.