The only possible reason GSX might cause AI traffic disappear, if on 3rd party airports with jetways you haven't disabled from the Config panel as you should, causing a parking naming conflict that might affect AI.
The program doesn't obviously "corrupt itself", and neither can cause a crash in MSFS but, fact you need to reinstall, might indicate something else is acting on it, most likely an antivirus, so the updater restores the correct files that might have been corrupted by the antivirus.