I'm going to second what others are saying and suggest that this is probably one of the best Mog Station implementations. I wish other components of the game would have 'checklists' that invisibly excluded Mog Station purchases, too (a proper Glamour Log; a Minion and Mount checklist). That way I could feel completionist-y without actually contributing to an atrocious cash grab.

On the other hand, it's also a troubling first step down a slippery slope, as is everything with the Mog Station. Right now, it's orchestral versions of in-game tracks, something not found anywhere within the game; will it stay that way? Or will we end up having to pay for certain boss themes in future Raids, as an example? I'm personally quite certain that IF this happens, there'll be a large group of players defending it, too: "thank goodness, it was sooooo hard to get the drops before", "it's not like Orchestrion rolls are needed to get the best gear, it's not P2W", "this funds more original music creation", and other such bullshit.

So, I'm of mixed feelings. Still, of all the various reasons to boycott the Mog Station, and to fault SE for its creation - and there are many such reasons - this is a decidedly weak one.