Rebuild as in "modify to mock Superman" this might be fake yes, but this is not the thing that debunks it.
Sure it is. There's no convincing, logical, or realistic narrative where a rich man asks for an already functional, useful, repaired, government-owned building to be taken over by him and made less functional, useful, wastefully rebuilt, and privately-owned purely to mock the city's hero for which funding has already erected a monument in his honor for.
It doesn't make sense.
Instead, what's clearly happened is that the fan fic writer mashed up and confused the set photo rumors about the
real world Eli & Edythe Broad Art Museum with a confused understanding of where Zod's death took place and tried to conflate the two... turning the station into a museum when, in-story, the fundraiser isn't at a museum and Zod's death wasn't at a museum, but because it's a museum in
real life, the writer had it on the brain.
All I'd say is a memorial monument is one thing, but with whatever damage Metropolis suffered, it's a stretch to divert funds towards an middle finger. I will give you this, though, it has the
potential for a compelling scene in the hands of a non-hack to show Luthor's charisma and ability to seduce.
If everyone is pragmatic and putting money properly into infrastructure and repairs that could account for a shortage of funds for the arts... so Luthor could reasonably attempt to raise funds and awareness for the things that feed human soul... and if
he get a variation of Superman's "dreams save us" speech
that would be interesting.
All of
that is plausible... but NOT the conversion of a working public transport into a museum.