"Necessary" is a strong word; "Desirable" might be a better choice. After all, even having a subwoofer isn't necessary, but it can be desirable.
It's one of those things ... a lot of the "hair on the back of your neck" moments in music are, if not random, at least intermittent, and not that common. But when they are there, it's exhilarating. I like a system that can reveal those moments, regardless of how uncommon they may be (or at what frequencies, level, etc).
Generally most people into HiFi choose components for their potential rather than their limits. I don't know if that's a particularly good answer to the question, but it's the way it is.
For what it's worth, I do like to play a good pipe organ recording from time to time, and the only time I have attended church in the last 40 years or so, is to hear the installation's pipe organ, and I try to do so at least a few times a year (we have four good organs in my city, pop 220,000, three are Cassavants. Touring organists put on concert works at all four a couple of times a year). One of the cool things about pipe organs is they are all unique, built to the venue, and custom-manufactured with different features and capabilities. Essentially, no two are alike or sound the same.
I also like to visit a church with a good pipe organ when I visit other cities. On my bucket list ... the four story, 6,489 pipe Cassavant at the Symphony Hall of the Montreal Symphony Orchestra.