I've fallen into a Xianxia rabbit hole these last few years, and the average one of them has more chapters than books have pages, so length is certainly no barrier to entry for me.
I've heard of Infinite Jest, even thought about giving it a whirl at some point, but never took the plunge. It seemed like a flavor-of-the-month obsession regardless of how good it might actually have been.
There is no shame in not knowing; the shame lies in not finding out