If you are looking at the device the screen won't time out.
Also, you can set the device screen time out function from a few seconds up to 10 minutes.
It is a battery saving feature. Next thing, Samsung will change it and then Complaints will follow about poor battery.......(where have we heard that before peoples???
🤣🤣)
I am not employed by Samsung nor do I receive any remuneration as a Samsung Members Star.
My device is an S25 Ultra.