Why not? It costs nothing, appart from transforming the old format into something the current site can work with, or more likely, have the old site support tbe old format.
It really is that old. According to their Supreme Court amicus brief: “Rising from its humble beginnings as a print newspaper in 1756, The Onion now enjoys a daily readership of 4.3 trillion and has grown into the single most powerful and influential organization in human history.” Seriously though, read that brief. It’s a masterful piece of satire.
It's hard to block mergers based on a company involved being a monopoly if none of the companies involved are monopolies or will become monopolies.
Regulators have to come up with a different set of rules to block "large but not monopolistic mergers" without also just effectively protecting the actual leader in a given industry from competition.