diff --git a/.github/scripts/trymerge.py b/.github/scripts/trymerge.py
index 98313a53dfa4..349db71308b7 100755
--- a/.github/scripts/trymerge.py
+++ b/.github/scripts/trymerge.py
@@ -1507,35 +1507,6 @@ def checks_to_markdown_bullets(
     ]
 
 
-def post_starting_merge_comment(
-    repo: GitRepo,
-    pr: GitHubPR,
-    explainer: TryMergeExplainer,
-    dry_run: bool,
-    ignore_current_checks_info: Optional[
-        list[tuple[str, Optional[str], Optional[int]]]
-    ] = None,
-) -> None:
-    """Post the initial merge starting message on the PR. Also post a short
-    message on all PRs in the stack."""
-    gh_post_pr_comment(
-        pr.org,
-        pr.project,
-        pr.pr_num,
-        explainer.get_merge_message(ignore_current_checks_info),
-        dry_run=dry_run,
-    )
-    for additional_prs, _ in get_ghstack_prs(repo, pr):
-        if additional_prs.pr_num != pr.pr_num:
-            gh_post_pr_comment(
-                additional_prs.org,
-                additional_prs.project,
-                additional_prs.pr_num,
-                f"Starting merge as part of PR stack under #{pr.pr_num}",
-                dry_run=dry_run,
-            )
-
-
 def manually_close_merged_pr(
     pr: GitHubPR,
     additional_merged_prs: list[GitHubPR],
@@ -2159,7 +2130,13 @@ def merge(
     check_for_sev(pr.org, pr.project, skip_mandatory_checks)
 
     if skip_mandatory_checks:
-        post_starting_merge_comment(repo, pr, explainer, dry_run)
+        gh_post_pr_comment(
+            pr.org,
+            pr.project,
+            pr.pr_num,
+            explainer.get_merge_message(),
+            dry_run=dry_run,
+        )
         return pr.merge_into(
             repo,
             dry_run=dry_run,
@@ -2182,12 +2159,12 @@ def merge(
         )
         ignore_current_checks_info = failing
 
-    post_starting_merge_comment(
-        repo,
-        pr,
-        explainer,
-        dry_run,
-        ignore_current_checks_info=ignore_current_checks_info,
+    gh_post_pr_comment(
+        pr.org,
+        pr.project,
+        pr.pr_num,
+        explainer.get_merge_message(ignore_current_checks_info),
+        dry_run=dry_run,
     )
 
     start_time = time.time()