Can someone still be an athiest if they believe our universe is a simulation?

[Meclazine for Israel]

The particles that make up the atoms from which we are made have a binary system of interaction defined by quantum mechanics.

We are essentially a bunch of predefined 1's and 0's.

However, there are two problems with the simulation argument.

Firstly, the laws of physics are too complex at each scale. The interactions of the largest members of our Universe such as black holes are extremely violent thanks to gravity. These interactions would not be the byproduct of a being setting up the Universe using subatomic particles in a simulator.

Secondly, it is extremely boring. Earth has existed for 99.9997% of its lifetime without Human Beings.

So the creator did not make the Universe for our benefit. Algae have been pumping out oxygen for 3 billion years until we were oxygenated at the right level to get walking.

We owe our theological existence to the God of Algae.

Therefore the answer to your question is a clear no.

If you believe it is a simulation, then you must believe in the creator of that simulation.