I think a lot of the author's points about Discworld hold true also for the Culture. Both works are steadfastly utopian, and build their conflicts around the intersection of that utopia with other, less utopian societies. Both have a strong suspicion of the Chosen One, and tend to rely on the actions of an ensemble of imperfect characters to drive forward the plot.

Where I hesitate is that I'm not sure Discworld's humour will land with everyone. It's a very dry form of absurdist British humour - if you enjoy Douglas Adams, you will probably get along with Terry Pratchett.

Well, they are both series, but the Discworld books have a bunch of recurring characters, and are basically comedic, whereas the Culture books do not, though Special Circumstances agent Diziet Sma pops up a few times. And the Culture books are much darker - the Culture is very morally ambiguous.

Discworld is a very funny place - I'm sure you would enjoy it.

The article ends with section called "Discworld Rules vs. Culture Rules" that you would probably find worth reading.