diff --git a/esphome/core/application.cpp b/esphome/core/application.cpp
index b0457d15ec..1a1dfc3233 100644
--- a/esphome/core/application.cpp
+++ b/esphome/core/application.cpp
@@ -634,7 +634,8 @@ void Application::unregister_socket_fd(int fd) {
 void Application::yield_with_select_(uint32_t delay_ms) {
   // Delay while monitoring sockets. When delay_ms is 0, always yield() to ensure other tasks run.
 #if defined(USE_SOCKET_SELECT_SUPPORT) && defined(USE_ESP32)
-  // ESP32 fast path: no fd_set needed — is_socket_ready_() reads rcvevent directly (~215 ns per socket)
+  // ESP32 fast path: reads rcvevent directly via lwip_socket_dbg_get_socket() (~215 ns per socket).
+  // Safe because this runs on the main loop which owns socket lifetime (create, read, close).
   if (delay_ms == 0) [[unlikely]] {
     yield();
     return;
diff --git a/esphome/core/application.h b/esphome/core/application.h
index 9bd4c99a6e..f5df5e7bdf 100644
--- a/esphome/core/application.h
+++ b/esphome/core/application.h
@@ -511,13 +511,12 @@ class Application {
 
 #ifdef USE_SOCKET_SELECT_SUPPORT
   /// Fast path for Socket::ready() via friendship - skips negative fd check.
-  /// Safe because: fd was validated in register_socket_fd() at registration time,
-  /// and Socket::ready() only calls this when loop_monitored_ is true (registration succeeded).
+  /// Main loop only — on ESP32, reads rcvevent via lwip_socket_dbg_get_socket()
+  /// which has no refcount; safe only because the main loop owns socket lifetime
+  /// (creates, reads, and closes sockets on the same thread).
 #ifdef USE_ESP32
-  /// ESP32: direct rcvevent read — always fresh, no fd_set snapshot needed (~215 ns)
   bool is_socket_ready_(int fd) const { return esphome_lwip_socket_has_data(fd); }
 #else
-  /// Other platforms: check fd_set populated by select()
   bool is_socket_ready_(int fd) const { return FD_ISSET(fd, &this->read_fds_); }
 #endif
 #endif