Shared webhosters (speaking for Germany) have started to disable support for PHP 7.x as there are no security patches anymore.
That made it necessary to upgrade lots of WordPress pages, especially older ones had some quirks in themes that broke with PHP 8.
I've updated around 25 sites for an old friend (she's more into the design/content part, not the dev part) and made good money with that. "Stupid" work nevertheless, would've preferred to do something better than run a PHP 8 linter and see where it breaks...