'lite' installers like these were useful because the official fastboot/adb was more than 100MB after install. But now the official platform-tool is only an 11MB zip compared to this outdated "ADB Installer v1.4.3" 9MB. It makes sense now why nobody bothers to maintain or create new 'lite' installers anymore. Because of this size reduction, I'd recommend getting the official platform tools and the Google USB driver and call it a day. Advanced users who use adb a whole lot could add the folder to system PATH - it's not mandatory.
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