Tracking is an emergency tool only. Helping each other find missing phones and when someone is not answering texts or calls. You did the right thing. Unfounded insecurities like that do not go away. Also texting you to tell you he needs to talk to his girls about this shows a level of immaturity. I am not sure how you are supposed to respond to that other than feeling guilty.
You sound very strong, rational and in a good place. Do not let the emotion of all this steer you off course. It sounds like you would be much better to take this independent break even if there was a future for the two of you. You are much better to make that decision from an independent vantage point.