My guess is they would not go in the first place.

or will they say that it’s fake and the windows on the space stations are monitors?

But if they did, this would be my guess. They have not used logic or accepted any proof that they are wrong so I doubt they would in space.

Some flat earth guys designed a great experiment to prove whether the earth is flat or round. The only problem was they when their own results showed it was round…

They rejected the results they had come up with as it did not fit their belief.