Now your default profile picture has been changed ... You must have noticed that there is no option to remove the user account picture. Maybe Microsoft would add the option later.

According to Microsoft, you might experience the user profile performance issues with event ID 454 because the default user profile includes a locked copy of another user’s cache database.

Microsoft Edge version 100 started rolling ... hub and improvements to default profile switching. The PWA hub is something we covered in detail in February when it was being tested.