diff --git a/crates/store/re_types_core/src/loggable.rs b/crates/store/re_types_core/src/loggable.rs
index b574ce7f92c2..dd09ff2f60bc 100644
--- a/crates/store/re_types_core/src/loggable.rs
+++ b/crates/store/re_types_core/src/loggable.rs
@@ -1,5 +1,3 @@
-use std::sync::Arc;
-
 use crate::{
     result::_Backtrace, DeserializationResult, ResultExt as _, SerializationResult, SizeBytes,
 };
@@ -41,21 +39,6 @@ pub trait Loggable: 'static + Send + Sync + Clone + Sized + SizeBytes {
     where
         Self: 'a;
 
-    // --- Optional metadata methods ---
-
-    /// The underlying [`arrow2::datatypes::DataType`], including datatype extensions.
-    ///
-    /// The default implementation will simply wrap [`Self::arrow_datatype`] in an extension called
-    /// [`Self::name`], which is what you want in most cases.
-    #[inline]
-    fn extended_arrow_datatype() -> arrow2::datatypes::DataType {
-        arrow2::datatypes::DataType::Extension(
-            Self::name().to_string(),
-            Arc::new(Self::arrow_datatype()),
-            None,
-        )
-    }
-
     // --- Optional serialization methods ---
 
     /// Given an iterator of owned or reference values to the current [`Loggable`], serializes
diff --git a/crates/store/re_types_core/src/tuid.rs b/crates/store/re_types_core/src/tuid.rs
index 917393853d1a..153f73110817 100644
--- a/crates/store/re_types_core/src/tuid.rs
+++ b/crates/store/re_types_core/src/tuid.rs
@@ -64,8 +64,14 @@ impl Loggable for Tuid {
         ];
         let validity = None;
 
+        let datatype = arrow2::datatypes::DataType::Extension(
+            Self::name().to_string(),
+            Arc::new(Self::arrow_datatype()),
+            None,
+        );
+
         // TODO(cmc): We use the extended type here because we rely on it for formatting.
-        Ok(StructArray::new(Self::extended_arrow_datatype(), values, validity).boxed())
+        Ok(StructArray::new(datatype, values, validity).boxed())
     }
 
     fn from_arrow(array: &dyn ::arrow2::array::Array) -> crate::DeserializationResult<Vec<Self>> {