Maybe, maybe not. It all depends on the observer.

Not at all, because this is a common objective reality we all share in whether we know it or not. Thus we can sit in our respective regions of planet earth tapping away on our laptops, MacBooks and PCs having this discussion. It's not a matter of opinion that these things work - they work because of the universal laws of nature.

Of course the observer might be of a a deistic cast of mind, believing it all to be the work of a creator, but the onus is on them to say why they think this to be the case when all the available evidence indicates otherwise. I have heard it said that God created the illusion of his non existence, in which he did a very through job. 10/10 in fact.