While EA is a massive corporation, the developers who made Tartosa and the animations deserve compensation. Furthermore, downloading cracks violates the EULA (End User License Agreement). Origin/EA App can detect modified game files and potentially ban your EA account (though rare for single-player games, it has happened).
To understand the demand for the .zip file, you must understand the pack itself. Released on February 23, 2022, My Wedding Stories was designed to overhaul weddings. For the first time, Sims could have elaborate, destination weddings in the world of (a stunning Mediterranean-inspired world). Sims4-DLC-GP11-My-Wedding-Stories.zip