Also, can we prove The Solipsist is not The Answer?
You don't need to.
As long as your internal model of the universe is consistent, multiple "answers" can coexist.
Solipsism is a moot issue because even if it
were true the universe would still appear as if it were
not true, by definition.
People understand this and nobody goes around claiming "I am 100% certain that solipsism is not true." They just ignore the possibility because it has no impact on anything at all -- other than philosophical arguments.
Likewise with simulations. If we are in a simulation then by definition the universe will appear to us as if we were not in a simulation -- that is the whole point of a simulation.
But if there is something you believe that is
only true if we are not in a simulation, you put yourself in a pickle by introducing a big inconsistency in your own logic. Look:
1) It impossible to determine if one is in a simulation.
2) Life and consciousness only exist outside of simulations.
3) Life and consciousness exist in our universe.
By 2) and 3) we can conclude we are not in a simulation. But 1) states that it is impossible to make that determination. INCONSISTENCY ALERT
So what are you going to change to not be logically inconsistent? Are you going to stick your head in the sand like so many other people here? Or are you going to rethink premise 1) and 2)?
If you want to rethink the premises, then you should note that premise 1) is a mathematical fact and premise 2) is ARBITRARY. Hmmm .... which one is a good candidate for re-thinking?