I am not inpaired but for me too, the login screen on Sonoma is a big step backwards. I understand the intention to not interrupt a nice background. But I am not getting to the loginscreen to watch backgrounds (wo does anyway). I need one thing only, and that is to log in. So, logically the login information and input field need to be big and at the center. I do not get that unhealthy fixation on backgrounds anyway (and I AM a designer).