There are risks and benefits to both live feeding and frozen thawed. So to say feeding f/t is safer isn't exactly accurate...
As long as you're feeding responsibly, there shouldn't be a problem with either methods.
Personally, I feed live mostly out of convenience and the fact that my snakes don't like f/t. Some, but not all, will take p/k.
I'd rather just put rats in the tubs and check back a few minutes later. Although, all of my snakes usually grab their rats the moment I drop them in. I breed my own feeders as well.
A safe method to feed live is to feed small and more frequent rather than larger and less often.
Rat crawlers and small rats are harmless. It's the adults that are potentially dangerous.
Also, I have a male who is off feed. I offer him food every week, but he refuses. Can you imagine how many frozen rats that would go to waste?
I would never refreeze a rat more than once...
And my roommates would be scandalized to find frozen rats in the freezer...
While they may not get the 'thrill of the kill', it's the one if not only activity they have in their lives. Think of it as enrichment? LOL