Current state of Google Messages missing alarm clock icon for reminders and Google Photos settings
The removal of these features has led many users to believe that they are intentional decisions by Google. However, it is more likely that these are bugs or glitches rather than planned changes, likely due to the recently planned upgrades currently in testing— such as noise cancellation and markdown text support.
Google has not yet addressed the missing features in Google Messages. Hopefully, the company quickly fixes these issues and restores the functionality that users have come to rely on sooner rather than later.