it doesn't export to the global namespace though:

    <script src="https://www.googletagmanager.com/gtag/js"></script>
    <script>$</script>
    ReferenceError: $ is not defined

    <script>jQuery</script>
    ReferenceError: jQuery is not defined

Is that the same JS used for Analytics? I think that's just for GTM. Here is the analytics script I see more often and it doesn't have jQuery: https://www.google-analytics.com/analytics.js