Yeah, no way this theory holds any water:

It doesnt add up scientifically: Building a sun simulator to replace the real Sun would require tech that's still sci-fi fantasy at this point. The Sun's this enormous natural star that makes energy through nuclear fusion. We can't copy that on a global scale and

no solid proof: Theres zero credible evidence that a sun simulator exists. Scientists have studied how the Sun works for ages, and what we see lines up with our knowledge of stars.

Astronomers would notice: Millions observe the Sun daily, including scientists and astronomers worldwide. They'd spot an artificial object up there but the data shows the Sun's operating through natural processes we understand.

The Sun Simulator Theory says some weird things are going on in photographs and videos of the Sun. Believers claim they show proof of a simulator, but most likely it's just normal stuff like lens flares or reflections that photographers know about.

Plus, everyone on Earth can see the Sun and it acts the same everywhere - rising, setting flares, sunspots. Creating a fake Sun that could fool the whole planet is out there, ya know?

Bottom line, the Sun Simulator idea is a new conspiracy theory without any real science or evidence behind it. We get how the real Sun works and no credible info supports swapping it with an artificial one.