From the article:

For all that Curses entranced me, however, I never came close to completing it. At some point I’d get bogged down by its combinatorial explosion of puzzles and places, by its long chains of dependencies where a single missed or misplaced link would lock me out of victory without my realizing it, and I’d drift away to something else. Eventually, I just stopped coming back altogether.

I was therefore curious and maybe even slightly trepiditious to revisit Curses for this article some two decades after I last attempted to play it. How would it hold up? The answer is, better than I feared but somewhat worse than I might have hoped.

[...]

[Curses] was designed, like his beloved Crowther and Woods Adventure, to be a place which you came back to again and again, exploring new nooks and crannies as the fancy took you. If you actually wanted to solve the thing… well, you’d probably need to get yourself a group for that.

[...]

All of which is to say that, even as it heralded a new era in interactive fiction which would prove every bit as exciting as what had come before, Curses became the last great public world implemented as a single-player text adventure.

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