[dajonker]

It is not, you can check the post for the full context.

[gadgetoid]

Or, better still, an Archive.org snapshot of the commit that added this very code: https://web.archive.org/web/20190331195338/bitbucket.org/pip...

(As a resident geek, I was asked to look into this by a friend)

[aasasd]

For good measure, the commit seems to be removed from the original repo.

[ivanhoe]

It's pretty much the same as if it was hardcoded, it drops all tables that have a name starting with the WP prefix. It's extremely ugly, but it's not unsafe (if your plan is removing all WP related tables from the DB).