It's relevant because it's a $3b sale of a data visualization software company, which is more than any YC acquisition and bigger than all but a handful of YC companies.
And it's a public-to-private transaction, not a takeover.
"In business, a takeover is the purchase of one company (the target) by another (the acquirer, or bidder). In the UK, the term refers to the acquisition of a public company whose shares are listed on a stock exchange, in contrast to the acquisition of a private company."