There are some ideas so absurd . . .
Like how time is relative, space can be curved, and pretty much everything about quantum mechanics, all of which are now both experimentally proven, and have practical applications?
How much of that will be valid if the universe turns out to be a "computer simulation?"
Oh well. If the world is "experimentally proven" to be a computer simulation, at least we can all stop worrying about everything, since nothing will be "real" anyway.
Even if things are real, there’s still no point in worrying.
I would be as true as it was before you found out.