While I see your point, there's a difference between a small, modest, floating chair and a massive, big, fat, red thing with the Imperial ensignia projected above it. It simply looks ridiculous.
P.S. It hardly floats, is flies about the place like a swoop bike - it would have worked a lot better as a meditation chair which it claims to be.
This. I have no problem with a floating throne for meditation or something or even a more modest one like Yoda had that can still look bad*ss, especially if slow, but it's the execution that really makes this look like an eyesore. It just isn't plausible that any Sith would hover around in such a ridiculous thing. You'd look like a tool.
And the whiny "if you don't like it, don't buy it" line is so old and ineffective. The reason I don't like it is because I don't want dozens of other people speeding around in that stupid thing. It kills the immersion factor, and feeling immersed in the game is important.