Don't get me started. The best thing I've ever seen is a site using Google tag manager to load an ad tag manager which loaded a different gtm instance which...

Don't get me started. The best thing I've ever seen is a site using Google tag manager to load an ad tag manager which loaded a different gtm instance which... Loaded the site's own js libraries. This horror out of time and space was beaten, shot and stabbed, and the developer responsible for its invention was promoted to CTO and King of the universe.