Google wants you to share calendar files via SMS.

Google, or someone at Google, thinks that Android users want to share calendar events via SMS. Yes via SMS. What a great useless idea. I never share calendar events and I doubt I'd do it via SMS, which I consider as obsolete in the age of WhatsApp, Facebook Messenger, and other cross-platform messaging apps.

Similar to Apple, Google believes you need that feature. You just don't know it yet. Now you have the ability to share calendar events via SMS with friends.

The update is rolling out now in Google Play Store. You have no choice but to download the update and move on.