I can't find anything from CIG that claimed the "LX" variant of the Razor was ever intended as some "Luxury" version, so I'm curious where they stated that was what MISC intended the letters to refer to (and also what the EX was officially meant to represent) - Going back to the initial release, the focus was only around its "speed"\acceleration, with no indication of any expectation of "luxury" -
https://robertsspaceindustries.com/comm-link/transmission/16599-misc-celebrates-50-years
The Aurora LX, on the other hand, was certainly advertised around "Luxury", with the LX being the "deluxe" variant of that line.
Just because 2 manufacturers use the same letters (or words - Drake has a Cutter, and the Reclaimer is also supposed to include a "cutter" - It doesn't mean it's the same, or even a similar, ship) to designate a model doesn't mean that they both intend those letters to represent the same thing.
As to the Fury, as with all ships\vehicles\items, its utility (or otherwise) comes down to the individual player - For many, it'll just be seen as an "LTI Token", while others may see it as having a legitimate use in their fleet and wish to pledge for it to keep as it provides gameplay\utility that they enjoy in the game and they do not wish to have to "grind" after any potential wipes in order to buy it. I doubt I'll have any use for one myself, but if it continues with the MISC\MIRAI use of "LX" to refer to the "racing" variant of their ships (and, at the size of the ship, it may be intended to compete against the P52\P-72 ships), then I imagine there'll be a few players who enjoy racing in the game looking to acquire one for their permanent fleet.