diff --git a/web/apps/photos/src/services/upload/uploadService.ts b/web/apps/photos/src/services/upload/uploadService.ts
index fdfb3657de..53301f4aaa 100644
--- a/web/apps/photos/src/services/upload/uploadService.ts
+++ b/web/apps/photos/src/services/upload/uploadService.ts
@@ -1037,26 +1037,24 @@ const withThumbnail = async (
         } else {
             // 3. Browser based thumbnail generation for paths.
             //
-            // There are two reasons why we could get here:
+            // We can only get here when we're running in our desktop app (since
+            // only that works with non-File uploadItems), and the thumbnail
+            // generation failed. The scenarios are:
             //
-            // - We're running under Electron, but thumbnail generation is not
-            //   available. This is currently only a specific scenario for image
-            //   files on Windows.
+            // 1. We're trying to generate an image thumbnail on Windows or on
+            //    ARM64 Linux. This won't be possible since the bundled
+            //    imagemagick doesn't yet support these OS/arch combinations.
             //
-            // - We're running under the Electron, but the thumbnail generation
-            //   otherwise failed for some exception.
+            // 2. We're trying to generate a video thumbnail on Intel macOS.
+            //    This won't be possible since the bundled ffmpeg doesn't
+            //    support Rosetta.
+            //
+            // 3. Some other arbitrary exception happened.
             //
             // The fallback in this case involves reading the entire stream into
             // memory, and passing that data across the IPC boundary in a single
             // go (i.e. not in a streaming manner). This is risky for videos of
-            // unbounded sizes, plus we shouldn't even be getting here unless
-            // something went wrong.
-            //
-            // So instead of trying to cater for arbitrary exceptions, we only
-            // run this fallback to cover for the case where thumbnail
-            // generation was not available for an image file on Windows.
-            // If/when we add support of native thumbnailing on Windows too,
-            // this entire branch can be removed.
+            // unbounded sizes, so we can only apply this fallback for images.
 
             if (fileTypeInfo.fileType == FILE_TYPE.IMAGE) {
                 const data = await readEntireStream(fileStream.stream);