@DivinylsFan You can get the Super Patcher here: https://forums.thesims.com/en_US/discussion/175477/official-ea-download-link-for-the-sims-3-cumulative-manual-update
You don't need to be connected to the internet or have an older system to install and run the game on 1.67.
The significance of 1.67 is that it's the last patch level you can use for Sims 3 that isn't tied to a third party client and requires being online to work. Once you have it, you never, ever have to worry about EA App or some other app down the pike that can mess up your game.
Also, like @Rflong7 said, there's an issue of invasiveness that you don't have to worry about.