Nobody said ts is dangerous
What is dangerous is people routinely switching on the generator and ts with hot loads
This causes arcing, pitting and sticking of the contacts in the TS relay
Emergency switching, might happen occasionally or never, so the chance of cumulative damage to the contacts is almost eliminated
Being lazy for routine use and testing is what creates the danger
A Subject Search for transfer switch failure
Is not going to find much
The people who fried their generator
Came on here asking for generator help
Then find out why the generator fried when they started it while plugged into shore power
They find the melted burned stuck ts relay insides it's box , AFTER THE FACT,