Update: An earlier version of this post states that Twitter removes the position marker in tweets. In fact, only the ability to share exact location information such as latitude and longitude is removed.
In today's announcement from the support account Twitter has opted to disable the option to mark specific locations in tweets. The feature is still available for photos via the updated Twitter camera. The company said this was because "most people do not mark their exact position in tweets."
Most people do not mark their exact position in tweets. Therefore, we are removing this feature to simplify your tweeting experience. With our updated camera, you can continue to mark your exact location in tweets. It is helpful if you share moments on the ground.
̵1; Twitter support (@TwitterSupport) June 18, 2019
Twitter users can disable location sharing features in their Privacy and Security menu. If you do not want to share your exact location information, you should still disable the feature as it remains available in the camera from Twitter.
After Tweets have been removed to accurately share location, users who want to share their location can do so via services such as Foursquare do.