The founder of Epios, u/navlys addressed this question on the sub two years ago. However, after conducting our own research a few months ago, my team has put together a more detailed explanation of how and why this happens. The following activities will 'update' the Last Profile Edit: Profile Data & Synchronization: Google keeps profile data in sync across all its services and devices. When a profile change occurs (e.g., profile picture update, birthday change), Google automatically updates this information across connected services, such as Gmail, Google Contacts, and Google Calendar. Trigger Events for Last Profile Update: In addition to the changes you mentioned, other events can trigger profile updates, such as adding a new Google service, modifying Google Play settings, or even certain updates made from Google Assistant. Changes made on linked devices (e.g., an Android phone) could trigger a synchronization. For instance, changing a contact on a mobile device might propagate to Google Contacts and could update the last profile update timestamp. Possible Sources of Unexplained Updates: Google Connected Services: Certain apps or services that integrate with Google profiles—such as YouTube, Google Fit, or Google Home—could also update profile information in ways that aren’t immediately visible to the user. Device Settings Sync: If an Android device syncs certain settings like Wi-Fi networks or app permissions, it may appear as a profile update, even though there’s no visible change in the Google Account profile. Background Account Checks: If you’re using multiple devices with the same Google account, some background checks (e.g., security scans or permissions refresh) might result in the last update field being modified. Link to Android Devices: Google accounts on Android devices frequently sync profile-related data such as backup settings, device configurations, and even certain app data. Changes in these settings or configurations might update the profile timestamp. For example, if you add a new app that requests permission to access your profile information or contacts, it might update the profile's last modification date. Security & Privacy Triggers: Updates to the “last modified” date could occur if there are security events, like an unauthorized login attempt or unusual activity detection, which prompts Google to refresh account settings or visibility options. More on reddit.com

Check if you have a Merchant Center account? merchants.google.com More on reddit.com

To update the business address on your Google My Business profile, follow these steps: Sign in to your Google My Business account. Select the business location that you want to edit. Click on the "Info" tab on the left side of the screen. In the "Address" section, click on the pencil icon to edit the address. Enter the new address and click "Apply" to save the changes. If the address is correct and matches the physical location of your business, click "Request verification" to verify the new address. Google will then send a postcard with a verification code to the new address. Once you receive the postcard, enter the verification code to complete the verification process and update the address on your Google My Business profile. Note: If your business has multiple locations, you will need to repeat these steps for each location. More on reddit.com

It's probably because of caching. Just wait for a day or two and everything will be fine. However if these pictures are very old, the problem is on your side. Where exactly do you have old versions of your photos? Do you have them in a browser on PC, or just in a specific app? Try removing the cache of Google Maps on your phone. Go to Settings, find a list of apps and click on Maps. Then go to Data and clear CACHE. Don't clear data. Just clear a cache. You won't lose anything, except maybe for offline maps. More on reddit.com