Debunking that theory wasn't too hard. The example of mothballing all very effective lucifer vessels just because one got destroyed would be dumb. Hence through this logic, mothballing all very effective sathani vessels just because one got destroyed would be would be just as dumb (and also through this logic in fs2, plausible if this fan theory is what the shivans did if they had a lucifer fleet; you wouldn't have seen anymore sathani past the first one that got destroyed).
What's up with this theory that seems to bother people so much? It operates under the assumption that there's more than just one lucifer. It's a theory and this assumption goes along with it. Operating under this theory to explore it doesn't mean i am saying for a fact that there is more than one lucifer or that i even think there is more than one lucifer.
And were yourself debunked in turn. 
Not really. The way stormkeeper responded appears evident that he thinks my exploring of this fan theory was followed with trying to pass off some of the information within it as de facto.
Others say that there are other Lucifer-class destroyers out there, but were withdrawn from the Shivan fleet and mothballed after the destruction of this one.
Either way, this fan theory that androgeus mentioned, i have explained in enough detail to show off why it's a crappy theory, why i'm calling it stupid, and ultimately something that didn't happen. I didn't contribute an opinion on whether or not i think that there's more than one lucifer.