One use case I noticed: Don't render the site until Google Tag Manager is loaded. Because of this, when using an adblocker that blocks GTM, the site will never

One use case I noticed: Don't render the site until Google Tag Manager is loaded. Because of this, when using an adblocker that blocks GTM, the site will never load. I guess the reason to block GTM until load it use it show some personalized ads/pricing/buttons.