This has been my big reservation about using it.No, It makes the console go warm since the fans are turned off but the system is actually in function. Using constantly will not do any harm because when you turn on again, the fans will kick in and it will cool down the console, but if you forget the console on standby for too long it can cause dead pixels like I seen on some console because of this. Using it without standby it is fine.
Can anyone definitively confirm that this issue can be prevented, such as via Priiloader standby settings? See https://www.reddit.com/r/WiiHacks/comments/eaeppw/cant_disable_ignore_standby_in_priiloader/